The reserve contains large captive enclosures and a large wild area protected by border fences.

保护区包括一块很大的圈养地，和一片被栅栏包围着的野生饲养区。

youdao

But our borders are just too vast for us to be able to solve the problem only with fences and border patrols.

但是，我们的边界线实在太长，因而我们无法仅仅通过设置围墙和部署边界巡逻队来解决这个问题。

youdao

There were no signs marking the international border, no fences, no barbed wire.

这儿是没有任何标记的国际边界，没有围墙，没有铁丝网。

youdao

Hard-line Republican candidates were able to fire up their base by denouncing illegal immigrants and urging the construction of bigger border fences.

CNN: Highlights from the world's press

Money would be used to fortify border fences, boost patrols, and acquire surveillance technology from the Department of Defense -- including drones and drone pilots.

CNN: Boston terror fears raised at Senate immigration hearing

What they wanted was not anything that looked like an amnesty but tougher border patrols, and higher, longer fences along the border.

BBC: Immigration makes election bow