广播电视英语短句 第 218 课：循环放牧-4

Changing methods of grazing also requires time. 变更放牧方式两样需要时间。

Farmers may want put up electric fences to enclose grazing areas, called paddocks. 牧民们可能想把牧区用电网围起来，叫做围场。

The paddocks will need water. Some farmers design paths for animals from different paddocks to drink from a common watering place. 而围场需要水。一些牧民就设计出一些路径以便于动物从不同的围场到同一个饮水处饮水。

Farmers can start rotational grazing by removing animals from the pasture when the grass is eaten to less than five centimeters. 当牧场的草被吃到低于 五厘米 时，牧民们就可能把动物从该牧场转移出来开始循环放牧了。