She awakened to the sound of birds singing.

她醒来听到鸟的叫声。

《牛津词典》

The sound was not unlike that of birds singing.

这声音有点像鸟鸣。

《牛津词典》

The old man asked him, "Did you notice the beautiful flowers along the road and the birds singing in the trees?"

这个老人问他：“你有没有注意到路旁那些美丽的花朵和树上歌唱的鸟儿？”

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Even the birds seemed to have stopped their singing.

VOA: special.2010.05.15

He went out and saw his mum in the trees, in the clouds, or when the birds were singing.

他走出去，看到自己的母亲,在树上，在云里，在鸟儿的歌声中。

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Consequently, over the past week, inhabitants of villages and parts of London under the Heathrow flight path could hear the birds singing on these beautiful spring days, not obscured by the cacophony of planes overhead.

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The birds are singing, the flowers are blooming and May Day is soon upon us.

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Ever since early man had to worry about forest predators, he says, people found singing birds reassuring.

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