sheep red blood cell

例句：

1. 1.The sheep are grazing on the grasslands.
   羊群在草原上吃草。
2. 2.Sheep are a common livestock in many countries.
   羊是许多国家常见的家畜。
3. 3.The farmer has to feed his flock of sheep every day.
   这位农民每天都要喂养他的羊群。