staple

Rice is the dietary staple for millions of people across Asia.

(Chinese) 大米是整个亚洲数百万人的主食。

She used a heavy-duty staple to fix the fabric to the wooden frame.

(Chinese) 她用一个强力订书钉将布料固定在木框上。

Please staple the report pages together before you hand them in.

(Chinese) 请在交报告之前把页面订在一起。

The wool was graded and stapled according to the length of its fibers.

(Chinese) 这些羊毛根据其纤维长度进行了分级和分类。