stapling

1.订书钉,U形钉

2.主要产品;主食

3.主要成分,重要特色

4.主要原料

5.大宗商品

1.装订

1.最基本的,最重要的

1.a small thin piece of metal wire bent into the shape of a flattened U with square corners, used to fasten things together, especially sheets of paper

2.an important product, especially a food, that people eat or use regularly

3.a regular and important part or feature of something

4.a raw material, especially the principal raw material produced or grown in a region

5.the commodity or product that is most important to the trade of a country, region, or organization

1.to fasten something to something else or in position with staples

1.used for describing the products, especially foods, that are the most basic and important for a particular place or group of people