名词
中文翻译：啮合扣
同义词：
['lock', 'latch', 'clasp']
例句：
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1.The lock on the door was broken,so we couldn't open it.
门上的锁坏了，所以我们打不开。
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2. Thelatch on the drawer is loose,and it keeps falling out.
抽屉上的拉手松了，总是掉出来。
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3. Theclasp on her dress is too tight, and she can't button itup.
她的衣服扣子太紧了，她解不开。