名词
中文翻译：格栅
同义词：
['slat', 'slatted', 'lattice']
例句：
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1. The roof of the house has a grate for smoke to escape through.
这所房子的屋顶有一个通风孔。
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2. The grate is made from iron and is very strong.
这个通风孔是用铁做的，非常坚固。
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3. The grate was so old that it had rusted through.
这个通风孔太旧了，已经生锈了。