There is a pumping station on the edge of the lake.湖边有座扬水站.He was pumping away.他正用抽水机抽水.Aerobic exercise gets the heart pumping and helps you to burn up the fat.有氧运动加速心脏跳动，有助于消耗更多脂肪。...
A down - hole autotracking well pumping unit different from the conventional pumping unit was designed.针对抽油技术的现状和存在的问题,设计了一种不同于有杆抽油方法的井下自动跟踪式抽油装置.It is autumn and they are pumping water out of the swimming pool.入秋了, 他们正在...