名词
中文翻译：秘密铰链同义词
同义词：
['secret lock', 'secret latch']
例句：
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1. The door has a secret hinge that keeps it from being opened easily.
这扇门有一个秘密铰链，使得它不容易被打开。
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2. Thesafe had a secret hinge that made it difficultto open.
这个保险箱有一个秘密铰链，使得它很难打开。
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3. Thecar's trunk had a secret hinge that kept it from being openedwithout keys.
这辆车的后备箱有一个秘密铰链，没有钥匙就无法打开。