sheet

bit, piece, sheet, slice, fragment, scrap

这些名词均含有“片、块、段”之意。
bit: 侧重指微小，一点点，小碎片。
piece: 最普通用词，多指从整体上分割下来的东西，可大可小。
sheet: 侧重指平整很薄的一张或一片。
slice: 多指切得很薄的一片食物。
fragment: 指破裂的，不完整的碎片。
scrap: 侧重指废弃的零碎之物。

名词 sheet:

1. any broad thin expanse or surface
2. used for writing or printing
   同义词：piece of paper, sheet of paper
3. bed linen consisting of a large rectangular piece of cotton or linen cloth; used in pairs
   同义词：bed sheet
4. (mathematics) an unbounded two-dimensional shape
   同义词：plane
5. newspaper with half-size pages
   同义词：tabloid, rag
6. a flat artifact that is thin relative to its length and width
   同义词：flat solid
7. (nautical) a line (rope or chain) that regulates the angle at which a sail is set in relation to the wind
   同义词：tack, mainsheet, weather sheet, shroud
8. a large piece of fabric (usually canvas fabric) by means of which wind is used to propel a sailing vessel
   同义词：sail, canvas, canvass

动词 sheet:

1. come down as if in sheets
2. cover with a sheet, as if by wrapping

1. She went as white as a sheet when she heard the news.
   她听到这个消息顿时脸色苍白。
2. They cut holes on the sheet of metal with a punch press.
   他们用冲床在金属板上打孔。
3. The letter was written on a single sheet of paper.
   这封信只用一张纸写成。
4. She inserted a new sheet of paper into the typewriter.
   她把一张白纸插入打字机里。
5. The doctor wanted us to use the sheet for a shroud.
   医生想让我们用床单当裹尸布。
6. We change the sheet every week.
   我们每个星期换一次床单。
7. The rain was coming down in sheets.
   大雨滂沱而下。
8. They wrapped fish and chips in a sheet of newspaper.
   他们把鱼和马铃薯片用一张报纸包起来。