staple
noun [ C ] uk/ˈsteɪ.pəl/ us/ˈsteɪ.pəl/
(WIRE)
订书钉
a short, thin piece of wire used to fasten sheets of paper together. It has sharp ends that are pushed through the paper and then bent flat by a special device.
U 形钉（如 U 形电线卡）
a U-shaped piece of metal with sharp ends that is fixed into a surface to hold something, such as a wire fence, in a particular position
(BASIC)
主要产品；某物的主要部分
a main product or part of something
Shortages mean that even staples (= basic foods) like bread are difficult to find. 物资短缺意味着连面包之类的主食都难觅踪影。
Phosphate has been a staple of this area for many years. 磷酸盐多年来一直是这一地区的主要产品。
Romantic fiction and reference books are a staple of many public libraries. 言情小说和工具书是很多公共图书馆的主要藏书。
staple
adjective [ before noun ] uk/ˈsteɪ.pəl/ us/ˈsteɪ.pəl/
基本的，主要的；标准的，常规的
basic or main; standard or regular
The staple diet here is mutton, fish and boiled potatoes. 这里以羊肉、鱼和煮马铃薯为主食。
Prices of staple foods such as wheat and vegetables have also been increasing. 小麦、蔬菜等主要食品的价格也一直在上涨。
Her latest film is the staple offering of action and comedy that we have come to expect. 她的最新影片，如同我们所预料的一样，又是常规的动作加喜剧。
staple
verb [ T ] uk/ˈsteɪ.pəl/ us/ˈsteɪ.pəl/
用钉书钉钉住
to fasten something using staples
Would you mind stapling the reports together? 你能把报告用订书钉订好吗？