linesmen

例句
柯林斯高阶英汉双解学习词典释义
  • N-COUNT
    (足球、网球等运动中的)边线裁判员,巡边员,司线员
    A linesman is an official who assists the referee or umpire in games such as football and tennis by indicating when the ball goes over the lines around the edge of the field or court.