vi.发牢骚，<口>抱怨
n.好抱怨(或发牢骚)的人，(对小事的)牢骚

原形：grouch复数：grouches

My neighbor is a real grouch in the morning, always complaining about something.
我的邻居早上真是个爱抱怨的脾气坏的人，总是对什么事情不满。
After a long day at work, all I want to do is relax, not listen to your grouch about the weather.
工作了一整天后，我只想放松一下，不想听你抱怨天气。
She's been a grouch ever since she found out she didn't get the promotion.
自从她知道自己没有得到晋升后，她就一直很烦躁。
The old man down the street is known for being a grouch, but deep down he has a heart of gold.
街尾的那个老人以脾气坏出名，但其实他心地善良。
Don't mind him, he's just a grouch today; he'll be back to his normal self tomorrow.
别介意他，他今天只是心情不好，明天就会恢复正常了。
The customer was a grouch, nitpicking every little detail about the service.
那位顾客是个牢骚鬼，对服务中的每一个小细节都挑剔不已。
Being sick turned him into a temporary grouch, but once he recovered, his cheerful personality returned.
生病让他暂时变成了一个爱发牢骚的人，但一旦康复，他开朗的性格就回来了。
It's hard to have a pleasant conversation with someone who's constantly being a grouch.
和一个总是爱抱怨的人进行愉快的交谈是很困难的。
The coach's constant criticism turned him into a grouch on the field, affecting his performance.
教练不断的批评使他在场上变得脾气暴躁，影响了他的表现。
Even though he woke up on the wrong side of the bed, he tried not to let his inner grouch show at the office.
尽管他一大早就心情不好，但他尽量不让自己的坏脾气在办公室里表现出来。