1. Dog's life 悲惨的生活

He's leading a dog's life.
他过着牛马不如的生活。

2. Don't have a cow 别大惊小怪

Don't have a cow! I'll pay for the damages.
别大惊小怪的！我会赔偿损失的。

释义：

cow: 母牛，体积大吧。别把小事整得像个母牛似的。

链接：

别大惊小怪：

Don't make a mountain out of a molehill.

Don't make a fuss!