1. Never pipe the discharge line directly into a drainage ditch, sewer or sump. 排放管道绝对不要直接接到排水沟、下水道或污水坑。
2. The actuators have a self-contained oil sump so a separate oil supply is not required. 该驱动器有一个自我包含的油底壳，使一个单独的石油供应是不是必需的。
3. The stability of sludge sump of underground continuous wall during short sump excavation was discussed. 本文论述地下连续墙泥浆槽在短槽挖掘时的稳定性问题。
英英解释
n.
1. an oil reservoir in an internal combustion engine
2. a well or other hole in which water has collected
3. a covered cistern; waste water and sewage flow into it
