A sump pump can drain a low-lying area and divert water to another location where it can drain properly.

阿水坑泵可以排水沟的低洼地区，调水到另一个位置，它可以排水正常。

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Introduced to plan an oil sump and sewer in the tanks and to design a sewerage system and recovery system of oils in the bulking area.

介绍了设置集油坑排污管及库区沟网排水回收油脂系统的原理、方法、效果。

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United mechanics who inspected the engine found that two shop towels had been used to cover openings in the oil sump area, instead of protective caps.

CNN: US Airways, United face FAA fines for safety violations