垂耳

例句：

1. 1. The dog has a long, drooping ear.
   这只狗有一对长而下垂的耳朵。
2. 2. The oldman had a drooping ear dueto age.
   这位老人因为年纪大了，耳朵下垂。
3. 3. The baby's ears aredrooping because of cold weather.
   由于天气寒冷，宝宝的耳朵下垂了。