toss-up

汉语翻译

英语解释：

名词 toss-up:

1. an unpredictable phenomenon
   同义词：tossup, even chance

例句：

1. Both players are equally good so it's a toss-up (ie impossible to predict) who will win.
   那两个运动员不相上下，谁能取胜还很难说。