mutters
A mutter is an utterance, often expressing complaint, that is so quiet that it cannot easily be heard.
They make no more than a mutter of protest.
他们不过是小声抗议了一下。
mutters , muttering , muttered
If you mutter or if you mutter something, you speak very quietly so that you cannot easily be heard, often because you are complaining about something.
'God knows,' she muttered, 'what's happening in that madman's mind.'
“天知道那个疯子的脑子里正在想什么,”她低声抱怨道。
She can hear the old woman muttering about consideration.
她能听见这老妇人低声说要考虑考虑。