The cattle are grazing in the field.

群田野上草。

The donkey is eating grass on the field.

这头驴子田野上草。

Horses are grazing in the pasture.

马儿牧场上草。

Cattle were grazing in the field.

里草。

Cattle is browsing in the field.

田里草。

Cattle are herbivorous animals.

是草的动物。

The horses fed quietly.

马草。

Horses are pasturing there.

马那边草。

Chris has talked about pandas being an evolutionary cul-de-sac, and it's certainly unusual for a carnivore to take up herbivory.

克里斯曾经说熊猫是进化的尽头，一种食肉动物起了草，这当然不同寻常。