Terry Messmer is a professor at Utah State University who studies wild horse management.

特里·梅斯默是犹他州州立大学研究野马管理的教授。

But Messmer said the number of livestock that grazed on public land is far larger than the number of wild horses.

但是梅斯默说在公共土地吃草的家畜数量比野马的数量要多很多。