保护区内有一群野牛。
There is a herd of bison in the reserve.
北美野牛是美国西部的象征。
The bison is a symbol of the American West.
野牛在大草原上自由地漫游。
The bison roamed freely across the prairie.
北美野牛在平原上自由地漫游。
The bison roamed freely across the plains.
这个公园是大量北美野牛的家园。
The park is home to a large bison population.
野牛通常生活在草原和森林地区。
Bison usually live in prairies and forest areas.
Catalo（家牛与野牛杂交生下的杂种牛）具有牛和美洲野牛的特征。
A catalo has characteristics of both cattle and bison.
我们在国家公园里看到了几只野牛。
We saw a few bison in the national park.
野牛是北美洲最大的陆地动物之一。
Bison are one of the largest land animals in North America.
保护工作帮助增加了北美野牛的数量。
Conservation efforts have helped increase the bison numbers.