目前，美国放牧者正致力于恢复俄国的肉牛养殖业。
放牧者在广阔的乡村放牧，但是农场主却把牲口和土地圈起来，这就是西部地区引起许多激烈争斗的原因。
The cattle owners let their animals wander across open country, but the farmers railed in their cattle and their land, and this is what caused many bitter fights in the old west.
作为一个强有力的竞争者，蕨类植物排挤了其他植被，从而降低了放牧地的价值。
A tough competitor, bracken reduces the value of grazing land by crowding out other vegetation.
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