mutter

1. V-T/V-I If you mutter, you speak very quietly so that you cannot easily be heard, often because you are complaining about something. 轻声说话; 小声抱怨

"God knows," she muttered, "what's happening in that madman's mind."

“天知道，”她低声抱怨，“那个疯子脑子里正在想什么。”

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。

2. N-COUNT Mutter is also a noun. 轻声低语; 小声抱怨

They make no more than a mutter of protest. 他们不过是小声抗议了一下。

3. mutteringN-VAR 喃喃细语

He heard muttering from the front of the crowd. 他听到人群前面传来喃喃低语。