v.发牢骚；抱怨；轰鸣
n.怨言；牢骚；轰隆声
A lot of students grumble about heavy reading assignments. 许多学生发牢骚说阅读量太大。
It's not like him to grumble at her. 抱怨她可不像他的做法。
We've got nothing to grumble about. 我们没什么可抱怨的。
They will grumble about having to do the work. 他们将为不得不干那项工作而抱怨。
用作名词 (n.)I don't want to hear another grumble from you. 我不愿再听到你的怨言了。
He has everything he needs, but he is still full of grumbles. 他需要的一切都得到了，却还牢骚满腹。
grumble的基本含义是“发怨言”“抱怨地说”,这种抱怨大多是没理由的或喋喋不休的,既可以是指上级对下级的抱怨,也可以是下级对上级的抱怨,这种牢骚常常会使人感到反感。
grumble可用作不及物动词,也可用作及物动词,用作及物动词时,可接名词、代词或that引导的从句作宾语。
