She turned him in the bed so that the sheets wouldn't chafe his skin into sores...她帮他翻了个身，免得他生褥疮。Sheets of postage stamps are perforated.一张张的邮票都打过接缝孔.In graphite sheets, carbon atoms bond together in rings.石墨层中的碳原子相...
In graphite sheets, carbon atoms bond together in rings.石墨层中的碳原子相互连接形成碳环。He crunched the sheets of paper in his hands.他把那沓纸揉得嚓嚓响。The wood was cut into large sheets of veneer.木料被锯成大块的薄板。...