Let's be honest—there isn't a snowball's chance in hell that we'll win this game. [=there's no chance that we'll win]老实说，我们绝不可能赢得这场比赛。

Unfortunately, he doesn't have a snowball's chance in hell of getting the job. [=there is no chance that he will get the job; he will not get the job]不走运的是，他毫无机会得到这份工作。