a big fish in a small pond
大才小用
Tom is a big fish in a small pond. You need to force him to do something more challenging.
汤姆真的是大才小用。你要强迫他做一些有挑战性的事情。
squirrel something away
偷藏东西
My father sometimes squirrels some money away before he gives his salary to my mom.
我爸爸有时会在将薪水交给我妈妈之前偷藏私房钱。
a stool pigeon
密探
The policeman got a stool pigeon. That is why he can always get the first-hand information.
那位警察有个密探。这就是为什么他总有第一手消息的原因。
be somebody's pigeon
负责人
Accounting is not my pigeon. You should find Jack.
会计不是我负责的。你要找杰克。
put the cat among the pigeons
闹得鸡飞狗跳
If you tell them this shocking news, I believe that will put the cat among the pigeons.
如果你告诉他们这则可怕的新闻，我相信那将会闹得鸡飞狗跳。