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1·They were probably no wiser than a cricket's chirrup.

它们并不比一只蟋蟀唧唧的叫声更加高明。

2·To utter a succession of light chirping or tremulous sounds; chirrup.

啁啾发出连续的轻的啁啾声或抖动的声音；

3·Numerous kinds of insects group themselves and chirrup, in the fields and the golden sunshine.

各类昆虫聚集在金色的阳光下唧唧地鸣叫。