thick as thieves

a close friend; the bartender was chummy with the regular customers; the two were thick as thieves for months.

亲密的朋友；这个酒吧招待对常客很亲密；他们两个亲密了几个月。

I see you two all the time , you're thick as thieves , you are ! He must'a said something !

我知道你俩天天在一起，亲密无比，狼狈为奸！他一定说了什么！

We are brothers as thick as thieves.

我们手足情深亲密无间。