purify相关的词根或词缀是: purpurg

Gas drillers are obliged to purify the water they extract .

现在燃气钻探人员不得不把他们抽出的水进行净化处理。

However it takes another three weeks to extract and purify the drug

不过还需要三周的时间来对药物进行提纯和净化。

Some enthusiasts have even learned to purify their own cocaine , using acetone and coffee filters .

一些狂热者甚至已经学会将他们自己的可卡因用丙酮和咖啡过滤器提纯。

Wind turbines and solar cells will generate electricity and a rainwater collection system will harvest and purify rain .

风力发电机和太阳能电池可以产生电能，雨水收集系统能够收集并净化雨水。

It is known to purify the lungs and skin and generate perspiration to reduce fevers .

据了解，它可以净化肺部和皮肤，使身体排汗退热，而且它还有镇定作用。