名词
中文翻译：金属板门
同义词：
['steel door', 'metal door']
例句：
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1.The security guard was seen opening the sheet-metal gate to let people in.
保安被看到打开金属门让人们进来。
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2.The new building has a sheet-metal gate that can open and close automatically.
这座新楼有一个可以自动开合的金属门。
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3.The sheet-metal gate is made of high-quality steel, which makes it durable and secure.
这个金属门是由高质量的钢材制成的，这使得它耐用且安全。