名词
中文翻译：隐蔽铰链
同义词：
['concealed hinge', 'concealed hinge', 'hidden hinge']
例句：
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1. The doorwas closed with a concealed hinge to prevent anyone from seeing inside.
门是用一个隐蔽的铰链关闭的，以防有人看到里面。
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2. The old mansion had several concealed hinges that were difficult to find.
这座老宅有几个难以发现的隐蔽铰链。
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3. The car's trunk was hidden behind a concealed hinge, making it difficult to open.
汽车的后备箱被一个隐蔽的铰链隐藏起来，很难打开。