blocking fish with electric screen

例句：

1. 1. The road was blocked due to an accident.
   由于一场事故，道路被堵了。
2. 2. The construction crew had to block off the road to make way for the new bridge.
   施工队不得不封锁道路以便建造新的桥梁。
3. 3. The traffic police were blocking the intersection to prevent accidents.
   交通警察正在封锁交叉口以防止事故。