叽咕

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

他对我咕了几句话, 可我没太清楚。

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

伯希尔先生满嘴塞着饼干，咕咕地说美极了。

As she denounced the government's policy, the crowd murmured their approval.

当她抨政府的政策时, 咕咕地表示赞同。