mumbled

He mumbled a few words and left.

咕哝了几句便走了。

He mumbled something to me which I did not quite catch.

叽咕了几句话, 可没太听清楚。

Mr. Bosher, with his mouthful of biscuit, mumbled that it was sweetly pretty.

伯希尔先生满嘴塞着饼干，叽叽咕咕地说这真是美极了。

He mumbled sth. to me but I could not hear what he said.

咕哝了几句，可是没听清说的什。

George mumbled incoherently to himself.

语无伦次地喃喃自语。

I wish you wouldn't mumble - I can't hear you clearly.

希望你说话不要含含糊糊 - 听不清你在讲什。

He always mumbles when he's embarrassed.

感到难为情时说话就含糊不清了。

In March he goes on a survival course and learns about the “umbles”: as hypothermia sets in you mumble, fumble, grumble, stumble, then finally tumble.

三月，开始野外生存训练，懂得了寒冷下嘴、脚是什样：低温开始了，咕哝，摸爬，嘟囔，踉跄，终于仆倒在地。