toss a coin

基本解释

Never toss a coin in the fountain and hope your dreams will come true.
永远不要在喷泉中投掷一枚硬币然后希望你的梦想变成现实。
Toss a coin and get heads 100 times in a row and use superstistics to conclude that the next toss is more likely to be tails than heads.
连续扔硬币一百次都是正面，那么通过迷信预言我们可以断言下一次更有可能是反面。
At present on the West Coast, when a gang of longshoremenworking on cargo start a shift, they often divide themselves into two equal groups and toss a coin.
目前在西海岸，从事船货装卸工作的一伙码头装卸工开始轮班时，经常分成两组，然后掷硬币决定先后顺序。

If you toss a coin twice and the first experiment doesn't influence the second, we say they're independent and there's no relation between the two.
如果你抛两次硬币,第一次的结果并不影响第二次的结果,所以我们说他们是相互独立的,这两次试验没有关系
耶鲁公开课 - 金融市场课程节选
You might say the probability that you toss a coin and it comes up heads is a half, because it's equally likely to be heads and tails.
如果你抛一枚硬币,正面向上的概率一定是50%,因为正反哪一面向上的可能性是相同的
耶鲁公开课 - 金融市场课程节选
I mentioned this before -I think I mentioned it before -if you say, I'm going to ask you to bet on a coin toss.
我之前提到过...,应该提到过...,我邀请你与我赌硬币正反面
耶鲁公开课 - 金融市场课程节选

It doesn't matter whether Meyer or Reuben comes tonight, or when, or which one, or if they come at the same time, toss a coin, and have her by turns on the kitchen floor.
NPR: Excerpt: 'Away'