birl

例句：

1. 1. The little bird flew away to the tree top.
   这只小鸟飞到了树顶。
2. 2. She was surprised when she saw a baby bird on her window sill.
   当她看到窗台上有一只小鸟时，她感到惊讶。
3. 3. The little bird sang a beautiful song for us.
   那只小鸟为我们唱了一首美妙的歌曲。