“额外批准卡”的简称。多指体育比赛特批的参赛资格证书wild card

• 潘兵和夏嘉平将获“外卡”直接参加正选比赛。

  Pan Bing and Xia Jiaping got a "wild card" to directly take part in the formal competition.

• 她将持外卡参加于8月27日开始的美国网球公开赛。

  She will take part in the US Open, beginning on the 27th of August, through holding a "wild card"