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。
