牢骚满腹

tā kàn qǐ lai láo sāo mǎn fù nǐ zuì hǎo zhǎo tā tán tan

他看起来牢骚满腹，你最好找他谈谈。

He looks like he's got an axe to grind. Better have a talk with him.

tā men zǒng shì láo sāo mǎn fù bào yuàn yǒu hěn duō shì qing yào zuò

他们总是牢骚满腹，抱怨有很多事情要做。

They're always moaning and groaning about how much they have to do.

dāng nǐ wèi kāi chē lù yuǎn ér láo sāo mǎn fù shí xiǎng xiǎng nà xiē tú bù yuǎn xíng de rén

当你为开车路远而牢骚满腹时，想想那些徒步远行的人。

Before whining about the distance you drive, think of someone who walks the same distance with their feet.