v.鸟鸣，用柔和的颤声唱( warble的现在分词 )...

A flock of birds was already warbling a cheerful morning chorus.一群鸟儿已经齐声唱起了欢快的晨曲。Their flute - like warbling became happy and unrestrained.从中传出的笛儿般又细又亮的叫声,也就格外轻松自在了.Larks were warbling high up in the sky.云雀在高空鸣唱....

warbling的音标：...

Larks were warbling high up in the sky.云雀在高空鸣唱.If a warmly warbling warbler warbles to another warmly warbler, which warmly warbler warbles warmest?如果一只热情的鸣鸟对另一只热情的鸣鸟鸣啭, 哪只热情鸣鸟鸣啭得最热情?A flock of birds was already warbling...