mumble to oneself 自言自语
stop mumbling 停止嘟囔
keep mumbling 不停嘟囔
hear the mumbling 听到嘟囔声
low mumbling 低沉的嘟囔
1. I heard him mumbling something in his sleep.
我听到他在睡梦中嘟囔着什么。
2. She was mumbling an apology while looking at the floor.
她低着头，含糊地嘟囔着道歉。
3. Stop mumbling and say it clearly!
别嘟囔了，大声清楚地说出来！
4. The old man was mumbling about the weather all day.
那位老人整天都在嘟囔着天气不好。
A: Can you hear what the teacher is saying? It sounds like mumbling.
A：你能听到老师在说什么吗？听起来像在嘟囔。
B: I think he is just tired and speaking softly.
B：我觉得他只是累了，说话声音比较小。
1) 含糊不清地说话
2) 低声抱怨
3) 咕哝、嘟囔
4) 含混的言语
1. 含糊不清地说话；嘟囔；咕哝
2. （因含糊而难以理解的）低语
e.g.He was mumbling about his bills.
他在嘟囔着他的账单。
noun/verb (gerund)
1. speaking in a low or indistinct voice so that the words are difficult to understand.
Synonym: muttering, murring