mumbles

v.喃喃而语；咕哝

n.喃喃而语；咕哝

Uh, you really shouldn't mumble, because I can't understand a word you're saying. 喔，你不应该咕咕哝哝地说，因为你说的我一句话也听不懂。

Uh, you really shouldn't mumble, because I can't understand a word you're saying. 喔，你不应该咕咕哝哝地说，因为你说的我一句话也听不懂。