plumb worn out.

• 累极了

plumb worn out.的用法和样例：

例句

1. I am tired out after the long walk.
   长途跋涉之后我觉得累极了。
2. I'm not accustomed to staying out so late and I am extremely tired.
   我不习惯在外面呆得太晚，我累极了。