It was the most exciting holiday I've ever had.

那是我经历过的最令人兴奋的假日。

With the fall of the Bastille in 1789, a wave of euphoria swept over Europe.

随着1789 年巴士底狱的陷落，极度兴奋的情绪在整个欧洲蔓延。

The latest in vivo scanners can image individual interneuronal connections firing in real time.

最新式的活体脑部扫描，可以即时观察到个别神经元连结兴奋的影像。

Scientists say these unmanned flights can make important and exciting discoveries.

科学家们说这次无人驾驶的太空飞行能够获得令人兴奋的重大发现。

Watching Septime Webre work with his dancers is an exciting creative process.

看Septime Webre 和舞一起工作是一种令人兴奋的创造性地过程。

I felt a strange sense of elation.

我有一种异常的兴奋感觉。

The excitement of the games has made them tired.

做游戏的兴奋使他疲劳。

After all that excitement the day was bound to end unhappily.

在所有的兴奋过后，这一天注定要以不快而结束。

Athletics’ anti-dope campaigners are faced with a credibility problem.

田径运动的反兴奋剂倡道者面临信。

A quick animation lit her face.

突来的兴奋情绪令她容光焕发。

Maybe because too glad, Massimo grew ablush and asked a series of questions.Dear Sir, do you like football?

大概是过于兴奋的缘故，马西莫的脸涨得通红，接连不断地提出了一个又一个：先生，您喜欢足球吗？

Impairment in the GABAergic system can lead to neuronal hyperexcitability which contributes to ischemia-reperfusion injury.

GABA能系统的异常可导致神经元的高兴奋性，从而导致再灌注损伤。

Setting off firecrackers can add to the festive atmosphere and offer an outlet for people's pleasure and excitement.

"放鞭炮能增添节日的气氛,给人们充分表达欢乐兴奋之情的机会。"

They were a doper's dream.

它们是最理想的兴奋剂。

The root has sedative, stimulant, and carminative properties, and is used for the treatment of colds and vertigo.

根有镇静，刺激兴奋和驱风的特性，并且用于治疗感冒和眩晕。

Her heart vibrates with excitement.

她的心因兴奋而悸动。

His heart pounded with excitement.

他的心兴奋得怦怦直跳。

Bobi no more wild wishes,Bobi most incitant things is that with he running very fast in open riverband near by his dwelling.

猎犬波比没有更多的奢望，最让它兴奋的事，莫过于埃克带它到寓所附近那空旷的河堤上飞快地奔跑。

Hellward, a one-man band in China, is the band that most excite me among the ones that I have listened this year.

中国的一支单人乐队，是今年以来所有乐队中最令我兴奋的其中之一。

The afferent nerve fibers were excited possibly belong to the different functional groups.Excitation of each group of fibers will cause algesia or analgesia respectively.

电子麻醉和电活力测试仪刺激所兴奋的神经纤维可能属于不同的功能亚群，它们的兴奋分别产生镇痛作用和疼痛。

It was the most exciting holiday I've ever had.

那是我经历过最令人兴假日。

With the fall of the Bastille in 1789, a wave of euphoria swept over Europe.

随着1789 年巴士底狱陷落，极度兴情绪在整个欧洲蔓延。

The latest in vivo scanners can image individual interneuronal connections firing in real time.

最新式活体脑部扫描，可以即时观察到个别神经元连结兴影像。

Scientists say these unmanned flights can make important and exciting discoveries.

科学家们说这次无人驾空飞行能够获得令人兴重大发现。

Watching Septime Webre work with his dancers is an exciting creative process.

看Septime Webre 和舞蹈演员一起工作是一种令人兴创造性地过程。

I felt a strange sense of elation.

我有一种异常兴感觉。

The excitement of the games has made them tired.

做游戏兴使他疲劳。

After all that excitement the day was bound to end unhappily.

在所有兴过后，这一天注定要以不快而结束。

Athletics’ anti-dope campaigners are faced with a credibility problem.

田径运动反兴剂倡道者面临信誉问题。

A quick animation lit her face.

突来兴情绪令她容光焕发。

Maybe because too glad, Massimo grew ablush and asked a series of questions.Dear Sir, do you like football?

大概是过于兴故，马西莫脸涨得通红，接连不断地提出了一个又一个问题：先生，您喜欢足球吗？

Impairment in the GABAergic system can lead to neuronal hyperexcitability which contributes to ischemia-reperfusion injury.

GABA能系统异常可导致神经元高兴性，从而导致再灌注损伤。

Setting off firecrackers can add to the festive atmosphere and offer an outlet for people's pleasure and excitement.

"放鞭炮能增添节日气氛,给人们充分表达欢乐兴之情机会。"

They were a doper's dream.

它们是最理想兴剂。

The root has sedative, stimulant, and carminative properties, and is used for the treatment of colds and vertigo.

根有镇静，刺激兴和驱风特性，并且用于治疗感冒和眩晕。

Her heart vibrates with excitement.

她心因兴而悸动。

His heart pounded with excitement.

他心兴得怦怦直跳。

Bobi no more wild wishes,Bobi most incitant things is that with he running very fast in open riverband near by his dwelling.

猎犬波比没有更多奢望，最让它兴事，莫过于埃克带它到寓所附近那空旷河堤上飞快地奔跑。

Hellward, a one-man band in China, is the band that most excite me among the ones that I have listened this year.

中国一支单人乐队，是今年以来所有乐队中最令我兴其中之一。

The afferent nerve fibers were excited possibly belong to the different functional groups.Excitation of each group of fibers will cause algesia or analgesia respectively.

电子麻醉和电活力测试仪刺激所兴神经纤维可能属于不同功能亚群，它们兴分别产生镇痛作用和疼痛。

It was the most exciting holiday I've ever had.

那是我经历过最令人假日。

With the fall of the Bastille in 1789, a wave of euphoria swept over Europe.

随着1789 年巴士底狱陷落，极度情绪在整个欧洲蔓延。

The latest in vivo scanners can image individual interneuronal connections firing in real time.

最新式活体脑部扫描，可以即时观察到个别神经元连结影像。

Scientists say these unmanned flights can make important and exciting discoveries.

科学家们说这次无人驾驶太空飞行能够获得令人重大发现。

Watching Septime Webre work with his dancers is an exciting creative process.

看Septime Webre 和舞蹈演员一起工作是一种令人创造性地过程。

I felt a strange sense of elation.

我有一种异常感觉。

The excitement of the games has made them tired.

做游戏使他疲劳。

After all that excitement the day was bound to end unhappily.

在所有过后，这一天注定要以不快而结束。

Athletics’ anti-dope campaigners are faced with a credibility problem.

田径运剂倡道者面临信誉问题。

A quick animation lit her face.

突来情绪令她容光焕发。

Maybe because too glad, Massimo grew ablush and asked a series of questions.Dear Sir, do you like football?

大概是过于缘故，马西莫脸涨得通红，接连不断地提出了一个又一个问题：先生，您喜欢足球吗？

Impairment in the GABAergic system can lead to neuronal hyperexcitability which contributes to ischemia-reperfusion injury.

GABA能系统异常可导致神经元高性，从而导致再灌注损伤。

Setting off firecrackers can add to the festive atmosphere and offer an outlet for people's pleasure and excitement.

"放鞭炮能增添节日气氛,给人们充分表达欢乐之情机会。"

They were a doper's dream.

它们是最理想剂。

The root has sedative, stimulant, and carminative properties, and is used for the treatment of colds and vertigo.

根有镇静，刺激和驱风特性，并且用于治疗感冒和眩晕。

Her heart vibrates with excitement.

她心因而悸。

His heart pounded with excitement.

他心得怦怦直跳。

Bobi no more wild wishes,Bobi most incitant things is that with he running very fast in open riverband near by his dwelling.

猎犬波比没有更多奢望，最让它事，莫过于埃克带它到寓所附近那空旷河堤上飞快地奔跑。

Hellward, a one-man band in China, is the band that most excite me among the ones that I have listened this year.

中国一支单人乐队，是今年以来所有乐队中最令我其中之一。

The afferent nerve fibers were excited possibly belong to the different functional groups.Excitation of each group of fibers will cause algesia or analgesia respectively.

电子麻醉和电活力测试仪刺激所神经纤维可能属于不同功能亚群，它们分别产生镇痛作用和疼痛。

It was the most exciting holiday I've ever had.

那是我经历过最令人兴奋假日。

With the fall of the Bastille in 1789, a wave of euphoria swept over Europe.

随着1789 年巴士底狱陷落，极度兴奋情绪在整个欧洲蔓延。

The latest in vivo scanners can image individual interneuronal connections firing in real time.

最新体脑部扫描，可以即时观察到个别神经元连结兴奋影像。

Scientists say these unmanned flights can make important and exciting discoveries.

科学家们说这次无人驾驶太空飞行能够获得令人兴奋重大发现。

Watching Septime Webre work with his dancers is an exciting creative process.

看Septime Webre 和舞蹈演员一起工作是一种令人兴奋创造性地过程。

I felt a strange sense of elation.

我有一种异常兴奋感觉。

The excitement of the games has made them tired.

做游戏兴奋使他疲劳。

After all that excitement the day was bound to end unhappily.

在所有兴奋过后，这一天注定要以不快而结束。

Athletics’ anti-dope campaigners are faced with a credibility problem.

田径运动反兴奋剂倡道者面临信誉问题。

A quick animation lit her face.

突来兴奋情绪令她容光焕发。

Maybe because too glad, Massimo grew ablush and asked a series of questions.Dear Sir, do you like football?

大概是过于兴奋缘故，马西莫脸涨得通红，接连不断地提出了一个又一个问题：先生，您喜欢足球吗？

Impairment in the GABAergic system can lead to neuronal hyperexcitability which contributes to ischemia-reperfusion injury.

GABA能异常可导致神经元高兴奋性，从而导致再灌注损伤。

Setting off firecrackers can add to the festive atmosphere and offer an outlet for people's pleasure and excitement.

"放鞭炮能增添节日气氛,给人们充分表达欢乐兴奋之情机会。"

They were a doper's dream.

它们是最理想兴奋剂。

The root has sedative, stimulant, and carminative properties, and is used for the treatment of colds and vertigo.

根有镇静，刺激兴奋和驱风特性，并且用于治疗感冒和眩晕。

Her heart vibrates with excitement.

她心因兴奋而悸动。

His heart pounded with excitement.

他心兴奋得怦怦直跳。

Bobi no more wild wishes,Bobi most incitant things is that with he running very fast in open riverband near by his dwelling.

猎犬波比没有更多奢望，最让它兴奋事，莫过于埃克带它到寓所附近那空旷河堤上飞快地奔跑。

Hellward, a one-man band in China, is the band that most excite me among the ones that I have listened this year.

中国一支单人乐队，是今年以来所有乐队中最令我兴奋其中之一。

The afferent nerve fibers were excited possibly belong to the different functional groups.Excitation of each group of fibers will cause algesia or analgesia respectively.

电子麻醉和电力测试仪刺激所兴奋神经纤维可能属于不同功能亚群，它们兴奋分别产生镇痛作用和疼痛。

It was the most exciting holiday I've ever had.

那是我经历过最令人兴奋假日。

With the fall of the Bastille in 1789, a wave of euphoria swept over Europe.

随着1789 年巴士底狱陷落，极度兴奋绪在整个欧洲蔓延。

The latest in vivo scanners can image individual interneuronal connections firing in real time.

最新式活体脑部扫描，可以即时观察到个别神经元连结兴奋影像。

Scientists say these unmanned flights can make important and exciting discoveries.

科学家们说这次无人驾驶太空飞行能够获得令人兴奋重大发现。

Watching Septime Webre work with his dancers is an exciting creative process.

看Septime Webre 和舞蹈演员一起工作是一种令人兴奋创造性地过程。

I felt a strange sense of elation.

我有一种异常兴奋感觉。

The excitement of the games has made them tired.

做游戏兴奋使他疲劳。

After all that excitement the day was bound to end unhappily.

在所有兴奋过后，这一天注定要以不快而结束。

Athletics’ anti-dope campaigners are faced with a credibility problem.

田径运动反兴奋剂倡道者面临信誉问题。

A quick animation lit her face.

突来兴奋绪令她容光焕发。

Maybe because too glad, Massimo grew ablush and asked a series of questions.Dear Sir, do you like football?

大概是过于兴奋缘故，马西莫脸涨得通红，接连不断地提出了一个又一个问题：先生，您喜欢足球吗？

Impairment in the GABAergic system can lead to neuronal hyperexcitability which contributes to ischemia-reperfusion injury.

GABA能系统异常可导致神经元高兴奋性，从而导致再灌注损伤。

Setting off firecrackers can add to the festive atmosphere and offer an outlet for people's pleasure and excitement.

"放鞭炮能增添节日气氛,给人们充分表达欢乐兴奋之会。"

They were a doper's dream.

它们是最理想兴奋剂。

The root has sedative, stimulant, and carminative properties, and is used for the treatment of colds and vertigo.

根有镇静，刺激兴奋和驱风特性，并且用于治疗感冒和眩晕。

Her heart vibrates with excitement.

她心因兴奋而悸动。

His heart pounded with excitement.

他心兴奋得怦怦直跳。

Bobi no more wild wishes,Bobi most incitant things is that with he running very fast in open riverband near by his dwelling.

猎犬波比没有更多奢望，最让它兴奋事，莫过于埃克带它到寓所附近那空旷河堤上飞快地奔跑。

Hellward, a one-man band in China, is the band that most excite me among the ones that I have listened this year.

中国一支单人乐队，是今年以来所有乐队中最令我兴奋其中之一。

The afferent nerve fibers were excited possibly belong to the different functional groups.Excitation of each group of fibers will cause algesia or analgesia respectively.

电子麻醉和电活力测试仪刺激所兴奋神经纤维可能属于不同功能亚群，它们兴奋分别产生镇痛作用和疼痛。

It was the most exciting holiday I've ever had.

那是我经历过最令人兴奋假日。

With the fall of the Bastille in 1789, a wave of euphoria swept over Europe.

随着1789 年巴士底狱陷落，极度兴奋绪在整个欧洲蔓延。

The latest in vivo scanners can image individual interneuronal connections firing in real time.

最新式活体脑部扫描，可以即时观察到个别神经元连结兴奋影像。

Scientists say these unmanned flights can make important and exciting discoveries.

科学家们说这次无人驾驶太空飞行能够获得令人兴奋重大发现。

Watching Septime Webre work with his dancers is an exciting creative process.

看Septime Webre 和舞蹈演员一起工作是一种令人兴奋创造性地过程。

I felt a strange sense of elation.

我有一种异常兴奋感觉。

The excitement of the games has made them tired.

做游戏兴奋使他疲劳。

After all that excitement the day was bound to end unhappily.

在所有兴奋过后，这一天注定要以不快而结束。

Athletics’ anti-dope campaigners are faced with a credibility problem.

田径运动反兴奋剂倡道者面临信誉问题。

A quick animation lit her face.

突来兴奋绪令她容光焕发。

Maybe because too glad, Massimo grew ablush and asked a series of questions.Dear Sir, do you like football?

大概是过于兴奋缘故，马西莫脸涨得通红，接连不断地提出了一个又一个问题：先生，您喜欢足球吗？

Impairment in the GABAergic system can lead to neuronal hyperexcitability which contributes to ischemia-reperfusion injury.

GABA能系统异常可导致神经元高兴奋性，从而导致再灌注损伤。

Setting off firecrackers can add to the festive atmosphere and offer an outlet for people's pleasure and excitement.

"放鞭炮能增添节日气氛,给人们充分表达欢乐兴奋机会。"

They were a doper's dream.

它们是最理想兴奋剂。

The root has sedative, stimulant, and carminative properties, and is used for the treatment of colds and vertigo.

根有镇静，刺激兴奋和驱风特性，并且用于治疗感冒和眩晕。

Her heart vibrates with excitement.

她心因兴奋而悸动。

His heart pounded with excitement.

他心兴奋得怦怦直跳。

Bobi no more wild wishes,Bobi most incitant things is that with he running very fast in open riverband near by his dwelling.

猎犬波比没有更多奢望，最让它兴奋事，莫过于埃克带它到寓所附近那空旷河堤上飞快地奔跑。

Hellward, a one-man band in China, is the band that most excite me among the ones that I have listened this year.

中国一支单人乐队，是今年以来所有乐队中最令我兴奋其中一。

The afferent nerve fibers were excited possibly belong to the different functional groups.Excitation of each group of fibers will cause algesia or analgesia respectively.

电子麻醉和电活力测试仪刺激所兴奋神经纤维可能属于不同功能亚群，它们兴奋分别产生镇痛作用和疼痛。

It was the most exciting holiday I've ever had.

那是我经历过最奋假日。

With the fall of the Bastille in 1789, a wave of euphoria swept over Europe.

随着1789 年巴士底狱陷落，极度奋情绪在整个欧洲蔓延。

The latest in vivo scanners can image individual interneuronal connections firing in real time.

最新式活体脑部扫描，可以即时观察到个别神经元连结奋影像。

Scientists say these unmanned flights can make important and exciting discoveries.

科学家们说这次无驾驶太空飞行能够获得奋重大发现。

Watching Septime Webre work with his dancers is an exciting creative process.

看Septime Webre 和舞蹈演员一起工作是一种奋创造性地过程。

I felt a strange sense of elation.

我有一种异常奋感觉。

The excitement of the games has made them tired.

做游戏奋使他疲劳。

After all that excitement the day was bound to end unhappily.

在所有奋过后，这一天注定要以不快而结束。

Athletics’ anti-dope campaigners are faced with a credibility problem.

田径运动反奋剂倡道者面临信誉问题。

A quick animation lit her face.

突来奋情绪她容光焕发。

Maybe because too glad, Massimo grew ablush and asked a series of questions.Dear Sir, do you like football?

大概是过于奋缘故，马西莫脸涨得通红，接连不断地提出了一个又一个问题：先生，您喜欢足球吗？

Impairment in the GABAergic system can lead to neuronal hyperexcitability which contributes to ischemia-reperfusion injury.

GABA能系统异常可导致神经元高奋性，从而导致再灌注损伤。

Setting off firecrackers can add to the festive atmosphere and offer an outlet for people's pleasure and excitement.

"放鞭炮能增添节日,给们充分表达欢乐奋之情机会。"

They were a doper's dream.

它们是最理想奋剂。

The root has sedative, stimulant, and carminative properties, and is used for the treatment of colds and vertigo.

根有镇静，刺激奋和驱风特性，并且用于治疗感冒和眩晕。

Her heart vibrates with excitement.

她心因奋而悸动。

His heart pounded with excitement.

他心奋得怦怦直跳。

Bobi no more wild wishes,Bobi most incitant things is that with he running very fast in open riverband near by his dwelling.

猎犬波比没有更多奢望，最让它奋事，莫过于埃克带它到寓所附近那空旷河堤上飞快地奔跑。

Hellward, a one-man band in China, is the band that most excite me among the ones that I have listened this year.

中国一支单乐队，是今年以来所有乐队中最我奋其中之一。

The afferent nerve fibers were excited possibly belong to the different functional groups.Excitation of each group of fibers will cause algesia or analgesia respectively.

电子麻醉和电活力测试仪刺激所奋神经纤维可能属于不同功能亚群，它们奋分别产生镇痛作用和疼痛。

It was the most exciting holiday I've ever had.

那是我经历过的最令人兴奋的假日。

With the fall of the Bastille in 1789, a wave of euphoria swept over Europe.

随着1789 年巴士底狱的陷落，极度兴奋的情绪在整个欧洲蔓延。

The latest in vivo scanners can image individual interneuronal connections firing in real time.

最新式的活体脑，可以即时观察到个别神经元连结兴奋的影像。

Scientists say these unmanned flights can make important and exciting discoveries.

科学家们说这次无人驾驶的太空飞行能够获得令人兴奋的重大发现。

Watching Septime Webre work with his dancers is an exciting creative process.

看Septime Webre 和舞蹈演员一起工作是一种令人兴奋的创造性地过程。

I felt a strange sense of elation.

我有一种异常的兴奋感觉。

The excitement of the games has made them tired.

做游戏的兴奋使他疲劳。

After all that excitement the day was bound to end unhappily.

在所有的兴奋过后，这一天注定要以不快而结束。

Athletics’ anti-dope campaigners are faced with a credibility problem.

田径运动的反兴奋剂倡道者面临信誉问题。

A quick animation lit her face.

突来的兴奋情绪令她容光焕发。

Maybe because too glad, Massimo grew ablush and asked a series of questions.Dear Sir, do you like football?

大概是过于兴奋的缘故，马西莫的脸涨得通红，接连不断地提出了一个又一个问题：先生，您喜吗？

Impairment in the GABAergic system can lead to neuronal hyperexcitability which contributes to ischemia-reperfusion injury.

GABA能系统的异常可导致神经元的高兴奋性，从而导致再灌注损伤。

Setting off firecrackers can add to the festive atmosphere and offer an outlet for people's pleasure and excitement.

"放鞭炮能增添节日的气氛,给人们充分表达乐兴奋之情的机会。"

They were a doper's dream.

它们是最理想的兴奋剂。

The root has sedative, stimulant, and carminative properties, and is used for the treatment of colds and vertigo.

根有镇静，刺激兴奋和驱风的特性，并且用于治疗感冒和眩晕。

Her heart vibrates with excitement.

她的心因兴奋而悸动。

His heart pounded with excitement.

他的心兴奋得怦怦直跳。

Bobi no more wild wishes,Bobi most incitant things is that with he running very fast in open riverband near by his dwelling.

猎犬波比没有更多的奢望，最让它兴奋的事，莫过于埃克带它到寓所附近那空旷的河堤上飞快地奔跑。

Hellward, a one-man band in China, is the band that most excite me among the ones that I have listened this year.

中国的一支单人乐队，是今年以来所有乐队中最令我兴奋的其中之一。

The afferent nerve fibers were excited possibly belong to the different functional groups.Excitation of each group of fibers will cause algesia or analgesia respectively.

电子麻醉和电活力测试仪刺激所兴奋的神经纤维可能属于不同的功能亚群，它们的兴奋分别产生镇痛作用和疼痛。

It was the most exciting holiday I've ever had.

那是我经历过的最令人兴奋的假日。

With the fall of the Bastille in 1789, a wave of euphoria swept over Europe.

随着1789 年巴士底狱的陷落，极度兴奋的情绪在整个欧洲蔓延。

The latest in vivo scanners can image individual interneuronal connections firing in real time.

最新式的活体脑部扫描，可以即时观察到个别神经元连结兴奋的影像。

Scientists say these unmanned flights can make important and exciting discoveries.

科学家们说这次无人驾驶的太空飞行能令人兴奋的重现。

Watching Septime Webre work with his dancers is an exciting creative process.

看Septime Webre 和舞蹈演员一起工作是一种令人兴奋的创造性地过程。

I felt a strange sense of elation.

我有一种异常的兴奋感觉。

The excitement of the games has made them tired.

做游戏的兴奋使他疲劳。

After all that excitement the day was bound to end unhappily.

在所有的兴奋过后，这一天注定要以不快而结束。

Athletics’ anti-dope campaigners are faced with a credibility problem.

田径运动的反兴奋剂倡道者面临信誉问题。

A quick animation lit her face.

突来的兴奋情绪令她容光焕。

Maybe because too glad, Massimo grew ablush and asked a series of questions.Dear Sir, do you like football?

是过于兴奋的缘故，马西莫的脸涨通红，接连不断地提出了一个又一个问题：先生，您喜欢足球吗？

Impairment in the GABAergic system can lead to neuronal hyperexcitability which contributes to ischemia-reperfusion injury.

GABA能系统的异常可导致神经元的高兴奋性，从而导致再灌注损伤。

Setting off firecrackers can add to the festive atmosphere and offer an outlet for people's pleasure and excitement.

"放鞭炮能增添节日的气氛,给人们充分表达欢乐兴奋之情的机会。"

They were a doper's dream.

它们是最理想的兴奋剂。

The root has sedative, stimulant, and carminative properties, and is used for the treatment of colds and vertigo.

根有镇静，刺激兴奋和驱风的特性，并且用于治疗感冒和眩晕。

Her heart vibrates with excitement.

她的心因兴奋而悸动。

His heart pounded with excitement.

他的心兴奋怦怦直跳。

Bobi no more wild wishes,Bobi most incitant things is that with he running very fast in open riverband near by his dwelling.

猎犬波比没有更多的奢望，最让它兴奋的事，莫过于埃克带它到寓所附近那空旷的河堤上飞快地奔跑。

Hellward, a one-man band in China, is the band that most excite me among the ones that I have listened this year.

中国的一支单人乐队，是今年以来所有乐队中最令我兴奋的其中之一。

The afferent nerve fibers were excited possibly belong to the different functional groups.Excitation of each group of fibers will cause algesia or analgesia respectively.

电子麻醉和电活力测试仪刺激所兴奋的神经纤维可能属于不同的功能亚群，它们的兴奋分别产生镇痛作用和疼痛。