单词：diethyldithiocar bamic acid
单词：diethyldithiocar bamic acid 相关文章
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
.S. President Barack Obama says the country's economic crisis demands that Congress act soon on his economic stimulus plan. Mr. Obama met Friday with top Democratic and Republican lawmakers at the White House. President Barack Obama speaks to report
VOA标准英语2009年(一月)
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
U.S. President Barack Obama is scheduled to sign the $787 billion economic stimulus plan into law at a ceremony in the western city of Denver, Colorado on Tuesday. Mr. Obama calls it a major milestone on the road to recovery for the U.S. economy, wh
VOA标准英语2009年(二月)
U.S. President Barack Obama is calling on America's allies to further coordinate efforts to jump-start their economies. The president also is expected to sign a bill Wednesday to keep the U.S. government running through September, while calling for
VOA标准英语2009年(三月)
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）