scum box and baffle

例句：

1. 1. The city's sewage system is constantly overwhelmed by the amount of scum box and baffle in the streets.
   城市的下水道系统不断被街道上的污泥箱和障碍物所淹没。
2. 2. The engineer had to clear away all the scum box and baffle before he could start working on the project.
   工程师在开始这个项目之前，必须先清除掉所有的污泥箱和障碍物。
3. 3. The construction workers were forced to remove the scum box and baffle that had accumulatedover the years.
   建筑工人被迫移除多年来积累的污泥箱和障碍物。