每日商务英语 第83期:未知数(在线收听

 英文释义 An unresolved issue; any matter involvingcontrasting opinions that has not been decided.

例句 Competition is fierce between the two rivals, and whowill win is still completely an open question.两个对手之间的竞争非常激烈,谁能获胜还完全是个未知数。
  原文地址:http://www.tingroom.com/listen/mrswyy/239770.html