cow-heifer

例句：

1. 1.The farmer milks his cow every morning.
   农民每天早上挤奶。
2. 2. The cow is a symbol of abundance and prosperity.
   奶牛是丰饶和繁荣的象征。
3. 3. The cow grazes in the meadow, enjoying the fresh grass.
   奶牛在草地上吃草，享受新鲜的草。