1 a large piece of material used on a bed 被单;床单
☞picture at bed 见bed插图
2 a piece of paper that is used for writing, printing, etc on (书写、打印等用的)纸:
a sheet of notepaper一张信纸Write each answer on a separate sheet.答一道题用一张纸。☞Look at balance sheet. 参看balance sheet。
3 a flat, thin piece of any material, especially a square or rectangular one 薄片(尤指正方形或长方形的):
a sheet of metal/glass一块金属薄板╱玻璃
4 a wide, flat area of sth 一大片:
The road was covered with a sheet of ice.路上覆盖着一层冰。