first base umpire

• 一垒审

first base umpire的用法和样例：

例句

1. The play triggered immediate boos, although it was not clear whether they were aimed at Rodriguez or the umpire.
   全场球迷立刻报以嘘声，尽管我们不确定这些嘘声是针对阿肉还是一垒审。