sheaf of groups

例句：

1. 1. The farmer carefully sheafed his crops for the winter.
   农民小心地捆扎他的庄稼准备过冬。
2. 2. Sheafs of wheat were stacked neatly in the barn.
   麦捆整齐地堆放在谷仓里。
3. 3. The sheaf of grapes was too heavy to carry.
   这捆葡萄太重了，无法携带。