whack off

• vt. 打掉(打下来)

whack off的用法和样例：

例句

用作及物动词 (vt.)

1. You can't hit off the lid that way.
   你不能那样把盖子打掉。
2. He swished off the tops of the grasses with a flick of his cane.
   他用藤条轻轻地打掉了草尖。