防栅

例句：

1. 1. The farmer used a wooden fence to keep his livestock in.
   农民用木栅栏把牲畜圈起来。
2. 2. The police cordoned off the area around the crime scene with a high-security barrier.
   警方用高安全屏障封锁了犯罪现场周围的区域。
3. 3. The new fence was designed to prevent trespassing.
   新围栏的设计是为了防止越界。