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He bent down and undid the laces of his shoes.

他弯腰鞋带。

He loosened his collar of his overcoat.

他了大衣领口。

I started to try and untangle the mystery.

我始尝试这个谜。

We all had a shot at solving the riddle.

我都试图这个谜。

He undid the string round a parcel.

他了绑包裹的绳子。

He unwound the bandage from his ankle.

他将绷带从脚踝上。

Science can disclose the mysteries of nature.

科学能自然界的奥秘。

Davy had finished ravelling out his herring net.

戴维经鲱鱼网的缠结。

Can you unfasten the lock catch of a box?

你能箱子的锁扣吗?

The fishing lines had become hopelessly entangled.

鱼线缠在一起，没办法。

I reached the horses and untethered them.

我走到马旁的系绳。

She undid the string round the parcel.

她了绕在包裹上的绳子。

The fisherman cast off the rope and set the boat adrift.

渔夫缆绳, 让船漂流而去。

Who can separate these entangled ropes for me?

谁能为我把这些绕在一起的绳子?

The ropes were entangled so I was not able to untie the parcel.

"绳子缠在一起了,所以我没能包裹。"

Standing up,he unbuckled his belt,and spread it laden across his waist.

他站了起来,腰带,带子的一头垂到腰部以下。

Unbuckle your pack's waistbelt before starting.

涉水前你的背包腰带。

The package came undone.

行李了。

She prepared to undo the band of cloth around his arm which had served as tourniquet.

她准备缠在他胳臂上止血的布带。

He untied the ropes.

他了绳子。