at the mercy of 受某人支配
It's painful to live at the mercy of someone else.

在别人控制之下生活是很痛苦的。

Whether or not the secretary will be fired is at the mercy of her boss.

这个秘书是否会被解雇完全取决于她的老板。

We are at the mercy of the weather

我们(出行)受天气限制。

quit 不干了

Bill Gates quit school and became a successful businessman.

比尔盖茨中途退学，后来成了一个成功的商人

I quit, I've had enough!

我不干了。我受够了！

It's time for me to quit.

我该下班啦

背景音乐：小贝的老婆维多利亚所在的组合 spicy girls 唱的wanna be