scaup

例句：

1. 1. Theducklings are swimming in the pond.
   小鸭子们在池塘里游泳。
2. 2. The gooseis flying high in the sky.
   鹅正在天空中飞翔。
3. 3. The swan is gracefully gliding across the lake.
   天鹅优雅地滑过湖面。