flushing manhole冲洗井;冲洗人孔;冲刷井
manhole door人孔门
watertight manhole水密入孔;水密入孔水密人孔;水密人孔
street manhole街道进人孔;街道人孔
roof manhole罐顶人孔
raised manhole凸起人孔;升高人孔
interceptor manhole阻截沙井
manhole step人孔踏步
N-COUNT（可数名词） A manhole is a large hole in a road or path, covered by a metal plate that can be removed. Workers climb down through manholes when they want to examine or clean the drains. (路面下水道的)出入孔; 检修孔; 人孔