鸽子咕咕地叫着，拍打着翅膀飞进飞出。

Pigeons fluttered in and out, cooing gently.

《柯林斯英汉双解大词典》

一只鸽子轻柔地咕咕叫。

A dove cooed softly.

《牛津词典》

鸽子在林中咕咕啼鸣。

The doves were cooing in the trees.

《新英汉大辞典》

Not because they were French, but they had a baby and it would gaggle and coo and they would respond in similar terms.

并非因为他们是法国人,而是因为他们的婴儿,婴儿会讲些咯咯咕咕的婴儿语,而他们会以同样的婴儿语对婴儿进行反应

耶鲁公开课 - 心理学导论课程节选

I know it's only been a few hours but my stomach is growling.

我知道才过了几个小时，但我的胃已经饿得咕咕叫了。

so that 实战 - SpeakingMax英语口语达人

When I say "pigeon," I don't really seem to have any particular sense of an onomatopoetic word, but if I use the Latin, pipio, which means "to chirp," all of a sudden I say, "Oh, that's onomatopoetic."

当我说鸽子的时候,这个词并不能，反应它自身的意思，但是如果我用拉丁语说鸽子，也就是咕咕“,这就是拟声了“

耶鲁公开课 - 文学理论导论课程节选