umpires
n. 裁判员；仲裁人（umpire 的复数）
v. 裁判；仲裁（umpire 的第三人称单数）
例句
The Amateur Softball Association's roster of umpires has declined to 57,000.
业余垒球协会的裁判员名单上的人数减少到了5.7万人。
《柯林斯英汉双解大词典》
When we are fielding, the umpires keep looking at the ball.
当我们在防守时，裁判们都盯紧了球。
Don't complain about the referees and umpires.
不要抱怨裁判员。
