我哥哥家养了两只小鸭子,一只是黄色的,另一只是黑色的。小鸭子浑身上下都长着毛,它们的头圆圆的,头的两侧长着一对圆圆的大眼睛。最可爱的是它们那又长又扁的橘黄色的嘴巴,它们的上嘴唇上还长着两个小孔,你们知道这两个小孔是干什么用的吗?这就是小鸭子的鼻孔,是用来呼吸的。? My brother has two domestic ducks, one is yellow and the other is black. Ducklings are covered with hair all over and under, their round head, both sides of the head with a pair of large round eyes. The cutest is their long, flat, orange mouth with two small holes in their upper lip. Do you know what these two holes are for? That's the duck's nostrils Used to breathe. ?