手动水泵 meaning in English

hand water pump

But when presenting his money , ryan learned that 70 would only buy a hand pump . actually it would cost 2 , 000 to
在交钱时，赖恩才知道七十美元只够买一个手动水泵，要
Because of low pressure required , even manual pumping can filter water successfully to achieve the potable water quality
因为水力过滤器所要求的压力小，在受灾区域没有电力供应的情况下，通过手动水泵实现正常过滤，保证受灾人员的饮用水安全。