单词:water purification project
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This is the VOA Special English Development Report. The lack of clean drinking water is a major problem worldwide. The World Health Organization says more than one billion people live in areas where renewable water resources are not available. The pr
By Paul Sisco Washington, DC 26 July 2006 watch Water Purification report Villagers in Iraq are better off today, thanks in part to NASA engineers from the Marshall Space Center in America's deep south. ------- Concern for Kids is a non-profit organ
Students Invent Water Purification Disc The lab operates like a kitchen. They add several ingredients. Then they mix, weigh, press and bake them. What's created is called a MadiDrop - a ceramic disc infused with silver. When dropped in water, silver
Katia: So, Enam, let's talk about environmental problems of our countries. In Bangladesh, what is an environmental problem? Enam: Actually, we have a lot of environmental problems in Bangladesh but mainly I'd say the soil contamination is quite bad,
Katia: So, Enam, let's talk about environmental problems of our countries. In Bangladesh, what is an environmental problem? Enam: Actually, we have a lot of environmental problems in Bangladesh but mainly I'd say the soil contamination is quite bad,
Nearly 230,000 people affected by the earthquake in Yunnan have been relocated to safer areas. Longtoushan County is the worst-hit area. Two relocation sites were established there to accommodate victims. Works are now underway to repair dozens of wa