"grumbles" in Chinese (Simplified)
抱怨嘟囔
Definition
以低声或小声抱怨，通常是因为小事。也指低沉的咕噜声，比如肚子叫或雷声。
Usage Notes (Chinese (Simplified))
“grumbles”通常用于非正式或中性场合，指人低声抱怨或嘟囔。可用于描述人的牢骚，也可以描述低沉的噪音（如肚子叫）。不用于正式投诉。
Examples
She always grumbles when she has to wake up early.
她每次早起都在**抱怨**。
The old man grumbles about the cold weather every winter.
老人每年冬天都会**抱怨**天气冷。
His stomach grumbles loudly before lunch.
他午饭前肚子总是**咕噜咕噜叫**。
Even when things go well, he still grumbles about something.
即使事情顺利，他还是会**抱怨**点什么。
She grumbles under her breath but never actually complains to the boss.
她**小声嘀咕**，但从不跟老板正式抱怨。
The kids grumble when they have chores to do, but they always finish them.
孩子们有家务要做时总会**抱怨**，但最后总能完成。