1.He mumbled a few words and left.

1.他几句便走。

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

2.他对我叽几句话, 可我没太听清楚。

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

3.他对我几句，可是我没听清他的什么。

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

4.伯尔先生满嘴塞着饼干，叽叽地是美极。

5.George mumbled incoherently to himself.

5.乔治语无伦次地喃喃自语。

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

6.我望你话不要含含糊糊 - 我听不清你在讲什么。

7.He always mumbles when he's embarrassed.

7.他感到难为情时话就含糊不清。

8.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.

8.三月，开始野外生存训练，懂得寒冷下嘴、脚是什么样：低温开始，，摸爬，嘟囔，踉跄，终于仆倒在地。