单词：glutamic acid-semialdehyde
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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
On todays Moment of Science, well be sniffing our way through a controversial culinary conundrum: the great cilantro debate. 今天的《科学一刻》栏目，我们将来探讨一个有争议性的烹饪难题：关于香菜的大辩论。 Accordi
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1. bicentennial /ˈbaisenˈtenjəl/ -- two hundredth anniversary The bicentennial of George Washington's birth was celebrated in 1932. 乔治华盛顿200周年生日纪念于1932年举行。 2. semicircle /ˈsemɪˌsɜ:kəl/ -- half of a circle At th
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Cilantro: Love It Or Hate It? On todays Moment of Science, well be sniffing our way through a controversial culinary conundrum: the great cilantro debate. According to scientists working at the Monell Chemical Senses Center, the smell of cilantro usu
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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 Birungi Machrine Kampala 26 November 2007 Attacks using acid are becoming more frequent in Uganda. Up to 2003, there were only 145 recorded attacks, but over the last three years, there have already been 87. Survivors often suffer from severe emot
VOA常速英语2007年（十一月）