song sparrow

例句：

1. 1. The song sparrow sings a beautiful melody in the early morning.
   清晨，歌鸟唱着美妙的旋律。
2. 2. The song sparrow is known for its melodious songs.
   歌鸟以其悦耳的歌声而闻名。
3. 3. The song sparrow is an important bird species in many ecosystems.
   歌鸟是许多生态系统中重要的鸟类物种。