单词：anhydrite for making sulphuric acid
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Acid Rain 酸雨 Damage from acid rain is widespread - not just in eastern North America, but throughout Europe, Japan, China, and Southeast Asia. Is the rain that's falling on your umbrella acidic? A listener's question -- on today's Earth and Sky. J
(科普英语)Earth and Sky
How does acid deposition affect human health? We eat food, drink water, and breathe air that has come in contact with acid deposition. Canadian and U.S. studies indicate that there is a link between t
知性英语
By Faiza Elmasry Washington, D.C. 29 March 2007 Watch Healthy Dining report U.S. federal health officials say Americans dine away from home more than ever before. And they say that dining out is a major contributor to the nation's weight problem. To
2007年VOA标准英语（三月）
Todd: So, Mark you said that you want to build a website. Mark: That's right. Yeah. So I noticed that you have a website, Todd. Todd: Yeah. Mark: Did you build that yourself? Todd: I did actually. I knew nothing when I first started and I learned and
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Acid Attacks Continue in Cambodia Despite Harsher Punishments For Som Bunnarith, memories of the day acid violence changed his life forever are as vivid in his mind as the scars on his skin. When it splashed on me, it felt hot. It even burned through
VOA标准英语2012年(九月)
AGRICULTURE REPORT - Making Cheese the Traditional Way By Mario Ritter Broadcast: Tuesday, September 27, 2005 I'm Doug Johnson with the VOA Special English Agriculture Report. The ancient way to store
农业与发展