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。

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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。

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Once, in Toledo, Ohio, as we left the field after playing the anthem for the Mud Hens, an umpire approached us.

有一次，当我们在俄亥俄州托莱多为沼泽鸟对演奏完国歌离开后，一位裁判走了过来。

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He was given not out by the on-field umpire but Australia called for a review and their appeal was upheld.

BBC: Australia poised for Test victory in New Zealand

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

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Replays suggested Johnson had missed the ball but the rules state that the on-field umpire should be given the benefit of doubt.

BBC: West Indies collapse puts Australia in control