swan goose

例句：

1. 1.The swan is a graceful bird with a long neck and white feathers.
   天鹅是一种优雅的鸟类，有着长长的脖子和白色的羽毛。
2. 2. The geese are flying in the sky, their wings beating the wind.
   鹅群在天空中飞翔，翅膀拍打着风。
3. 3. The swan goose is a symbol of beauty and elegance in Chinese culture.
   天鹅是中国文化中美丽与优雅的象征。