Cricket keeps an off-field umpire for boundary calls, and to ascertain whether batsmen are run out and if catches are real.

板球有一个场外的裁判来判定边界，并确定击球手是否出局，接球是否真实。

Cricket keeps an off-field umpire for boundary calls, and to ascertain whether batsmen are run out, and if catches are real.

板球为了边界球的判罚设置了一个外场裁判，以确认击球手是否出局，接球是否真实有效。