1. The boat has no fewer than five hydraulic pumps. 这艘船有不下5个液压泵。
2. Hardware shops have sold out of water pumps and tarpaulins. 五金商店的水泵和防水油布已经销售一空。
3. This is fen country – the mills drive pumps that drain the land. 这是一个沼泽国 - 这些工厂启动水泵排干地面积水。
4. Most new residential buildings in Sweden are already heated with ground-source heat pumps. 在瑞典,大多数新建的住宅建筑都已经由地源热泵系统供暖。
5. The engine eliminated water in the mines by driving efficient pumps, which made possible deeper and deeper mining. 通过高效的蒸汽泵驱动,发动机将矿井中的水排出,这使得矿井可以变得越来越深。