动词
中文翻译：解开
同义词：
['loosen', 'untie', 'untether']
例句：
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1.The key was unfastened and the door opened.
钥匙被解开了，门打开了。
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2. She untied her scarf from around her neck and put it on.
她解开了她的围巾从脖子上，把它戴上。
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3.The prisoners were unbound by the chains and were able to move freely.
囚犯们被链条解开了，能够自由移动。