sheaf of modules

例句：

1. 1. The farmer carefully shears the wheat into a neat sheaf.
   农民小心翼翼地将小麦剪成整齐的一束。
2. 2.She gathered her books in a sheaf on the table.
   她把书整理成一束放在桌子上。
3. 3. The sheaf of grapes was heavy enough to lift with one hand.
   这束葡萄足够重，用一只手就能提起。