名词
中文翻译：双重格栅
同义词：
['double slat', 'double slab']
例句：
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1.The double grating on the window is a good way to block out light.
窗户上的双层格栅是一个很好的阻挡光线的方法。
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2. The double grating on the roof is designed to prevent rain from leaking in.
屋顶上的双层格栅设计用来防止雨水渗透。
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3.The double grating on the door is strong enough to withstand heavy objects.
门上的双层格栅足够坚固，可以承受重物。