tossup

1. Vince carter-vince is a tossup.
   卡特卡特是一名投手。
2. It was a tossup between spending the night in the van and walking ten miles for help.
   在客货车里睡一晚还是走上十英里求援，当时实在是进退两难。

noun

1. an unpredictable phenomenon
   1. it's a toss-up whether he will win or lose

   Synonym:    toss-upeven chance