Every morning it was the same, despite the double locks that were put on the door.

每天早晨都是一样的，尽管门上有两把锁。

youdao

For your safety, please remember to lock the door with double locks and open the door after confirming the guest's ID.

为了您自身安全，请谨记在客房内锁上双重门锁并在确认访客身份后方可开门。

youdao

The door was plainly double-locked. It was one of those prison locks which old Paris was so fond of lavishing.

可以看得见锁孔，粗厚的锁闩深深地嵌在铁锁横头里，这锁看得出是双转锁，是监狱用的一种锁，过去在巴黎人们很喜欢用它。

youdao

So it's very important that the double bond locks it in a particular conformation.

所以双键把它们锁定在某一特定形状,是十分重要的。

麻省理工公开课 - 化学原理课程节选

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