tails

n. (硬币的)反面

Let's flip a coin to decide who should go first - do you want heads or tails?

我们来抛硬币决定谁先走吧，你是要正面还是要反面？

If I say"heads I win; tails you lose", I will win whatever happens.

如果我说：“正面我赢；反面你输”，那么无论怎样，我都会赢。