阻止物

例句：

1. 1. The traffic police blocked the road to prevent accidents.
   交通警察封锁了道路以防止事故。
2. 2. The construction workers were blocking the path for the new road.
   建筑工人正在为新路铺设而阻塞路径。
3. 3. The company decided to block access to the factory floor during maintenance.
   公司决定在维护期间封锁工厂楼层的入口。