窗外的小鸟（Once i saw a little bird） 31.Once i saw a little bird Once i saw a little bird Once i saw a little bird; 窗外的小鸟Once I Saw A Little Bird once I saw A little bird Once i saw a little bird（窗外的小鸟） There was a little bird 我是一只小小鸟 (I am a little bird) 我是一只小小鸟(I am a little bird)