a large pipe , usually underground , which is used for carrying waste water and human waste , such as urine and solid waste , away from buildings to a place where they can be safely got rid of
发音
例句
1. They are tearing up the street to repair a sewer. 他们正挖开马路修下水道。 2. The boy kicked a stone into the sewer. 那个男孩把一石子踢进了下水道。