as busy as a nailer

例句：

1. 1.She is as busy as a nailer with her work.
   她工作非常忙。
2. 2. He is as busy as a nailer with his studies.
   他学习非常忙。
3. 3. The nailer is as busy as a bee in the hive.
   这个钉匠就像蜂巢里的蜜蜂一样忙碌。