n.[C]

1. U形钉；订书针；肘钉
2. 钩环，锁环

vt.

1. 用U形钉固定
2. 用订书针（或肘钉）钉
   The letter was stapled to the other documents in the file.

   这封信与案卷里的其他文件钉在一起。

n.[C]

1. 主要产品[P1]
   Cotton is the staple of the area.

   棉花是这个地区的主要农作物。

2. 主要商品；日常必需品[P1]
   This store sells flour, salt, sugar and other staples.

   该店出售面粉、盐、糖和其他日常必需品。

3. 主食
   Sweet potato was the staple of their diet.

   过去甘薯是他们的主食。

4. 主要成分；主题
   The weather forms the staple of their conversation.

   天气构成他们谈话的主要内容。

5. 纤维，纤维的长度；原料
   They grow cotton of long staple.

   他们种植长纤维棉花。

a.[B]

1. 主要的；大宗生产的
   Rice is our staple food.

   米是我们的主食。

2. 经常需要的；经常用的
   Short stories are her staple reading.

   短篇小说是她经常看的读物。

3. 纺织纤维的

vt.

1. （按纤维长短）把……分级；把……分类

n.

1. a small flattened U-shaped piece of wire used to fasten papers together.
2. a small U-shaped metal bar with pointed ends for driving into wood to hold electric wires, battens, etc. in place.

v.

n.

1. a main or important element of something.
2. the fibre of cotton or wool considered with regard to its length and fineness.
3. historical a centre of trade in a specified commodity.

adj.