all in a day's work

Definition: nothing special, part of the routine

这句话的意思是“没什么特别的，司空见惯”

例句：

Don't worry about it. It's all in a day's work.

别担心，这没什么特别的，

Cooking is all in a day's work.

烧饭是常有的事儿。

All work and no play makes Jack a dull boy.

Definition: Idiom meaning that you need to have fun in order to be a happy, healthy person

这句话就是传说中的“只工作不玩耍，聪明的孩子也变傻”。

例句：

Go home! Remember: All work and no play makes Jack a dull boy.

快回家吧，要记住：只工作不玩耍，聪明的孩子也变傻。

I'm worried about him. He hasn't yet understood that all work and no play makes jack a dull boy.

我很担心他，他还没有明白过来，只工作不玩耍，聪明的孩子也变傻。