a herd with good lacation performance

例句：

1. 1. The herd of cattlegrazed on the grasslands.
   牛群在草原上吃草。
2. 2. Thefarmer herds his cows in the pasture.
   农民在牧场里放他的奶牛。
3. 3. Theherd of sheep is moving towards thehill.
   羊群正朝山移动。