1. in one's second childhood 返老還童

My father bought himself a toy train, and my mother said he was in his second childhood.

我爸給自己買了一個玩具火車，我媽說他真是返老還童了。

2. sleep like a baby 睡得香

Nothing can wake me up. I usually sleep like a baby.

我睡得很沉，沒什么東西能把我吵醒。

3. kid's stuff 很容易的事情

Climbing that hill is kid's stuff.

爬那座山太小兒科了。

4. like a kid with a new toy/like a kid in a candy store  很開心

Every time Bill gets a new gadget for his kitchen, he's like a kid with a new toy.

每次比爾往廚房里添個什么新物件，他都像一個得了新玩具的孩子一般高興。

5. new kid on the block 新來者

I'm just the new kid on the block. I've only been working here for a month.

我是公司的新員工，才來了一個月。

6. latchkey kid 掛鑰匙兒童（指因為父母忙于工作，放學(xué)后獨自在家的孩子）

My dad came home at eight in the evening and my mom only an hour earlier so I was a latchkey kid.

小的時候我是個“掛鑰匙”兒童，我爸晚上八點才回家，我媽七點回家。

7. a whizz-kid 有為青年

They've taken on some financial whizz-kid who's going to sort all their problems out.

他們請了些金融天才來幫他們解決問題。

8. a love child 私生子

He allegedly has a love child in Australia from an affair with a much younger woman.

他們說他在澳大利亞和一個很年輕的女人有一個私生子。