The contract was declared null and void.

合同被宣布无效。

A passport that is out of date is invalid.

护是无效的。

The coupon is not valid if detached.

这折扣券撕下即无效。

Their efforts to revive him were futile.

他们对他抢救无效。

They tried artificial respiration but it was of no avail.

他们试做人工呼吸,可是无效。

Such exceptions do not invalidate the rule.

这些例外并不证明此规则无效。

What is the significance of diriment impediments?

使婚配无效的阻碍，有什么意思？

Chief Judge Moran overruled the government's objections.

首席法官莫兰宣布政府的反对意见无效。

The judge annulled the contract because one of the signers was too young.

由于签署人中有一位年纪太轻, 法官宣告合同无效。

Antiviral therapy should be applied for the patients who showed ineffects ？under hormonotherapy.

临床上对用激素冲击治疗无效的远性排斥可给予抗病毒治疗。

Thirty one of 68 patients with irresponsive to antideprseant or antianxieyt therapy were cured, 20 improved and 17 ineffective.

68例经抗抑郁、抗焦虑治疗无效的病人，中药治疗后，31例显效，20例有效，17例无效。

There are two kinds: hindering impediments which forbid marriage, and diriment impediments, which destroy marriage.

有两样：一样是使婚配违法，一样是使婚配无效。

These synthetic progestins will compete with progesterone receptor binding sites and compete with progesterone rendering progesterone useless.

这些合成的黄体素会与黄体素接收器竞争，并使黄体素无效。

This Policy shall be voidable in the event of misrepresentation, misdescription or non-disclosure in any material particular.

被保险人如伪报、误报或隐瞒任何重要细节，本保险单应予无效。

Our marriages system can't be carried outwell because of the long – term defect of invalid marriages system.

无效婚的长缺失使我国的结婚得不到很好的贯彻。

Prescribed medication is the next step if dietary modifications and vitamin B6 therapy with doxylamine are ineffective.

如果饮食疗法与联合应用维生素B6和抗敏安无效，下一步就需要开处方药。

If no clinical effect is achieved after expectant treatment and extra-spinal diseases were excluded, exploratory operation inside canalis spinal should be employed.

经保守治疗后无效及排除其它椎管外疾患后，行椎管内探查手术治疗。

You have entered an invalid 10-character customization code. Please verify that you have entered the key provided with your Preinstallation Kit license.

您输入的十个字符的自定义代码无效。请确认您是否输入了随预安装库许可协议一同提供的密钥。

The Kuwaiti parliament, which had only functioned very briefly and ineffectually before, was reconvened and the emir backed the enfranchisement of women.

之前职能简单无效的科威特国会重新召开，而埃米尔（穆斯林国家的酋长）是妇女解放的后盾。

The dominance rules can be utilized to develop a relationship matrix which allows the branching algorithm to eliminate a high percentage of nonfeasible solutions.

利用优势法则可以做出关系矩阵，此矩阵可以用来消去极大量的无效解。