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wild cardˈwild card / / noun [countable] - (in card games) a card that has no value of its own and takes the value of any card that the player chooses（纸牌游戏）百搭牌，变牌（由持牌人自由决定牌值）
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sport体育) an opportunity for someone to play in a competition when he / she has not qualified in the usual way; a player who enters a competition in this way外卡（指按正常赛规不能参赛的选手获得的参赛资格）；外卡选手◆He was given a wild card for the tournament.他得到了这次锦标赛的外卡。◆a wild-card entry / place外卡参赛／名次
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computing计算机) a symbol that has no meaning of its own and can represent any letter or number通配符◆An asterisk is commonly used as a wild card.星号普遍用作通配符。◆a wild-card search通配符检索
- a person or thing whose behavior or effect is difficult to predict难以捉摸的人；难以预测的事；未知因素◆The Nationalist party is the wild card in the election.民族主义党是这次选举的未知因素。
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