以u开头的单词名词

　　But the some cause of much unhappiness for people too.

　　但某些原因它也会给人们烦恼。

　　He never told an untruth in his life.

　　他有生以来从来没有说过一句假话。

　　The umpire's decision is final.

　　裁判的裁定是不可更改的'。

　　When we are fielding, the umpires keep looking at the ball.

　　我们防守的时候，裁判们一直看着球。