1.These findings pave the way for guidelines on how much cactus is needed to purify water, say the researchers.
这组科学家说，这些发现为使用多少仙人掌用于净水的指南铺平了道路。
2.US Peroxide provides performance-driven, full-service environmental treatment programs to help purify water, wastewater, soil and air.
为了帮助净化水、废水、污泥和空气，美国过氧化氢领导办公室提供性能超越、服务周全的环境处理计划。
3.One of the ways to purify water is to make it spew slowly from the soil.
净化水的方法之一是让它从土中慢慢地渗出。
4.It uses rice husks (which are among the country's most common waste products) to purify water.
它使用谷物外壳（印度最普通的工业垃圾之一）过滤清水。
5.With it I can start a fire, build a shelter, purify water, signal for help, and even do some minor repairs.
依靠这套工具我能够生火、建立庇护所、净水、施放求救信号和一些简单的维修工作。
6.purify water quantify The cost of the flood damage is impossible to quantify.
这次水灾的损失是无可估量的。
7.Our findings show that PSB could improve the survivability , promote growth and purify water quality.
结果表明：PSB具有提高家禽、水产动物成活率、促进生长、净化水质的作用。
8.Socks won't purify water, but filtering it through fabric can help remove the more visible sediment and creepy-crawlers.
它不能净化水，但可以过滤掉可见沉淀物和可怕的小虫子。
9.So, let us show you how they purify water to sell it in stores or for coolers.
所以，我们来向你展示一下他们是怎样给那些在商店里出售的和用在冷却机里的水做净化的。
10.Once contaminated, it is hard to purify water quickly under emergency conditions.
污染一旦发生，在紧急情况下很难快速净化水源。