名词
中文翻译：Unknown
同义词：
['cap', 'fastener', 'fastening', 'fasten']
例句：
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2.
对某人或某事
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3.
在比赛中
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1.The capper on the door was a simple wooden knob.
门上的扣环是一个简单的木制旋钮。
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2.The fasteners were securely attached to the walls.
固定件牢固地附着在墙上。
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3. The fasten of the zipper is loose.
拉链的扣合部分松了。