单词：ultrafine soot
单词：ultrafine soot 相关文章
From VOA Learning English, this is the Health Lifestyle report. From Asia to Europe to North America, poor air quality is making people sick and, in some cases, killing them at an early age. Air pollution causes six million premature deaths every yea
2017年VOA慢速英语(四)月
This is Scientific American's 60-Second Science. I'm Cynthia Graber. This will just take a minute. There's a huge, gunky brown cloud that lingers over south Asia and the Indian Ocean each winter. Its been known to cause respiratory diseases and even
Scientific American(一)月
President Obama is spending the night in Riyadh, Saudi Arabia after a day of meeting there with King Abdullah. Tomorrow, the president heads to Cairo for the most important speech of his trip. NPR's Don Gonyea reports. The speech will be delivered b
2009年NPR美国国家公共电台6月
Study: Reducing Soot is Fastest Way to Slow Climate Change A new study finds that reducing carbon-rich soot emissions could be the fastest and most economical way to slow climate change and protect human health. Those dust-like particles released in
VOA标准英语2011年(九月)
These are called love tents but they're not what you think. 虽被称为爱的帐篷，但是它们可与你所想不同。 Chinese colleges have come up with an unusual way to help freshmen settle in. 中国的大学别出心裁，以一种特殊的方
英语新闻
Anirudh Sharma doesn't just want to pull harmful carbon from the air. He wants to offer a cheaper alternative to the exorbitant costs of ordinary printer ink. 阿尼鲁德夏尔马不仅想除掉空气中的有害炭物质，还希望创造一种更便
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