n.纸( sheet的名词复数 )；被单；一张（通常指标准尺寸的纸）；一大片（覆盖物） 英英释义： sheet[ ʃi:ts ]n.any broad thin expanse or surface"a sheet of ice"used for writing or printing同义词：piece of papersheet of paperbed linen consisting of a large rectangular piece of cotton or linen cloth; used