名词
中文翻译：锁扣
同义词：
['bolt', 'pin', 'screw', 'locking bolt']
例句：
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1.The car was fitted with a shackle stud to secure the luggage compartment.
这辆车安装了锁扣固定件来固定行李舱。
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2. The old house had several shackle studs that held the roof together.
旧房子有几个锁扣固定件，将屋顶连接在一起。
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3.The engineer used a shackle stud to fasten the door shut.
工程师用一个锁扣固定件把门紧紧关上。