裁判出示绿牌表示警告犯规球员。

For warning an offending player, the umpire shows him a green card.

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“绿牌”用来警告球员不礼貌的行为。

A green card for bad manners.

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绿牌专业的所有这些指标都是最佳的；黄牌专业居中。

Green sign majors, however, indicate the best ones in terms of these criteria, and the yellow sign majors sit in the middle.

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