toss-up

柯林斯词典

toss-up (toss-ups)

• 1. N-COUNT If you say that it is a toss-up whether one thing will happen or another thing will happen, you mean that either result seems equally likely. 一半对一半

  It's a toss-up whether oil prices will go up or down over the days ahead. 未来这些日子的油价涨落概率是一半对一半。

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