wild card

• n. (纸牌中的)百搭牌；未知的因素；[体]复活资格，复活选手；[计]通配符

wild card的英文翻译是什么意思，词典释义与在线翻译：

英英释义

Noun:

1. an unpredictable factor;

   "the weather was a wild card"
   

2. a playing card whose value can be determined by the person who holds it