1.a snowball's chance in hell 毫无机会
The scheme has a snowball's chance in hell of being accepted.
这个计划根本就没有希望被采纳。
2.when hell freezes over 绝不可能的事
Mr. lee will donate some money to charity, when hell freezes over.
李先生为慈善机关捐钱是不可能的。
3.a hell of 极度的;非常
That would be a hell of an ironic way to get into Mexico.
用那种方法进入墨西哥真是极度讽刺。
4.raising hell 大吵大闹
I got quite a shock seeing her raising hell with them at the party last night.
昨晚看到她在晚会上对他们大吵大闹,我十分吃惊。