"Well," he conceded, "I do sometimes mumble a bit."

“嗯，”他承认道，“我有时说话确实有点儿含糊。”

《柯林斯英汉双解大词典》

I could scarcely mumble while the police questioned me.

当警察问我的时候，我几乎说不出一句话了。

youdao

I heard an incoherent mumble.

我听到了不连贯的低语声。

youdao

May : (Mumble) I want to be like her.

阿美：（喃喃自语）我想像她一样。

youdao

May : (Mumble) I want to be like her.

阿美：（喃喃自语）我想像她一样。

youdao