sheets
A sheet is a large rectangular piece of cotton or other cloth that you sleep on or cover yourself with in a bed.
Once a week, a maid changes the sheets.
女仆每个星期换一次床单。
A sheet of paper is a rectangular piece of paper.
a sheet of newspaper.
一张报纸。
You can use sheet to refer to a piece of paper which gives information about something.
information sheets on each country in the world.
有关世界各国信息的资料。
A sheet of glass, metal, or wood is a large, flat, thin piece of it.
a cracked sheet of glass.
一块裂开的玻璃。
Overhead cranes were lifting giant sheets of steel.
高架起重机正吊起一块块巨大的钢材。
A sheet of something is a thin wide layer of it over the surface of something else.
a sheet of ice.
一大层冰。