staple

名词 staple:

1. (usually plural) a necessary commodity for which demand is constant
   同义词：basic
2. a natural fiber (raw cotton, wool, hemp, flax) that can be twisted to form yarn
   同义词：staple fiber, staple fibre
3. material suitable for manufacture or use or finishing
   同义词：raw material
4. a short U-shaped wire nail for securing cables
5. paper fastener consisting of a short length of U-shaped wire that can fasten papers together

动词 staple:

1. secure or fasten with a staple or staples

形容词 staple:

1. necessary foods or commodities

1. He came out with his staple excuse that he was too busy.
   他又拿出惯用的借口，说他太忙了。
2. Don't forget staples like sugar and salt when you go to the shops.
   你去商店时，不要忘记买盐和糖之类的必备食品。
3. He stapled the paper together.
   他把文件钉在一起。