1. The cows were grazing peacefully in the meadow.
奶牛在草地上平静地吃草。

2. The farmer milks the cows every morning.
农民每天早上给奶牛挤奶。

3. The cows need to be fed hay and grains every day.
奶牛每天需要喂草和谷物。

4. The cows are being herded into the barn for the night.
奶牛被赶进谷仓过夜。

5. The cows provide us with fresh milk every day.
奶牛每天给我们提供新鲜的牛奶。

6. The cows are a valuable asset to the farm.
奶牛是农场的宝贵资产。