阻断

例句：

1. 1. The traffic police are blocking the road to prevent accidents.
   交通警察正在封锁道路以防止事故。
2. 2. He blocked her from leaving the room.
   他阻止她离开房间。
3. 3. The construction workers were blocking the path for the new road.
   建筑工人正在为新路铺设障碍。