warbling

例句:

• A mead Bordered about with warbling water brooks.
  来自W. Owen
• 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。
  
• The bell jingled, and I heard a canary warbling.
  来自NEWYORKER
• 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.
  
• Birds on the branches warbling.
  来自Milton