动词短语
中文翻译：放下门链
同义词：
['unlock', 'unlock the door']
例句：
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1. I need to drop the doorchain before I go out.
我需要出门前放下门链。
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2. The thief droppedthe door chain and ran away.
小偷放下门链就跑了。
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3. After entering the room, she dropped the door chain and lockedthe door behind her.
进入房间后，她放下门链并锁上了门。