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Too much of the world lacks access to clean drinking water. Engineer Michael Pritchard did something about it -- inventing the portable Lifesaver filter, which can make the most revolting water drinkable in seconds. An amazing demo from TEDGlobal 2009. ...
五、阅读表达Have you ever thought how you'll get drinkable water in the wild? I often advise my students to collect dew(露水). It's probably the simplest and safest way in a survival situation.The only things needed to collect dew are a piece of cloth and a glass. Just wipe(擦) the...
Have you ever thought about how you'll get drinkable water in the wild? I often advise my students to collect dew(露水). It's probably the simplest and safest way in a survival situation.The only things needed to collect dew are a piece of cloth and a glass. Just wipe the tiny drops...
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Water is very important in our daily life.We need water to drink take a shower or bath water plants and so on.So without water life can not go on. Most part of the Earth is covered by ocean but the ocean water is salty and it is not drinkable.But people are always wasting water....
How to make filthy water drinkableGood morning everybody. I'd like to talk about a couple of things today. The first thing is water. Now I see you've all been enjoying the water that's been provided for you here at the conference, over the past couple of days. And I'm sure you'...
clear water because many of them are badly polluted. So in order to save water the first thing we should do is reduce water pollution. In addition we should develop good habits to save water. For example turn off the tap after we use. Or we should recycle the water to make it full ...
. How is water made drinkable? A. 律件农代亲认消百采实的证率美起计片日律件农代亲认消百采实的证率美起计片日 By testing it in the building.律件农代亲认消百采实的证率美起计片日律件农代亲认消百采实的证率美起计片日 B. 身想制日目人委她式间半经群没政体部革身想制日目人委她...
clear water because many of them are badly polluted. So in order to save water the first thing we should do is reduce water pollution. In addition we should develop good habits to save water. For example turn off the tap after we use. Or we should recycle the water to make it full ...