名词
中文翻译：床单
同义词：
['blanket', 'coverlet', 'quilt']
例句：
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1. She spreads a sheet on the floor to protect it from dirt.
她在地上铺了一块床单，以防弄脏。
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2. The baby was sleeping soundly on its soft blue sheet.
宝宝在柔软的蓝色床单上睡得安稳。
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3. He spreads his arms wide and covers himself with a sheet.
他张开双臂，用床单把自己裹住。