'I'll just have to do it myself,' he grumbled.

“我只好自己动手了。”他咕哝着说。

《牛津词典》

When Pinocchio had had his fill, he grumbled, as he wiped his mouth, "My thirst is gone."

皮诺乔喝够了，擦了擦嘴，嘟囔着说：“我不渴了。”

youdao

This is inconvenient, "he grumbled."

“这不方便，”他抱怨道。

youdao

He grumbled, but eventually he accepted this new reality.

FORBES: Why Microsoft Is Wrong About Google

After we landed, the farmer we met grumbled that he had to drill his well deeper each year so he could grow more rice in the dry lands.

FORBES: World Water Day 2013: The Biggest Story of Our Lifetime is Water

Mr Jobs grumbled that he had been forced to introduce FairPlay by the majors, which would not otherwise have sold their music through Apple's iTunes, the leading online music store.

ECONOMIST: Online music