单词：decomposed austenite
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From NPR News in Washington, I'm Lakshmi Singh. BP is coming under mounting pressure to step up its response to the country's worst ever oil spills in the Gulf of Mexico. It's coming down from top Obama administration officials who've been dispatched
2010年NPR美国国家公共电台5月
I'm Asieh Namdar at the CNN.com news room in Atlanta. Here is a look at what is happening NOW IN THE NEWS. The polls are open in South Carolina. It is the first southern state to hold the Democratic primary this year. And the stakes are high for all
商业报道2008年(一)月
This is Scientific American's 60-Second Science. I'm Cynthia Graber. Thisll just take a minute. Bisphenol A. Also called BPA, it's used to make shatter-proof plastic known as polycarbonate, found in everything from water bottles to medical devices to
Scientific American(五)月
Pulp from Plants Makes Packaging More Earth-Friendly 植物纸浆让包装更环保 The average American throws away about 84 kilos of plastic every year. Much of that ends up in the ocean, according to the marine research group Algalita. Almost half
2016年VOA慢速英语(九)月
Research Breakthrough for Biodegradable Tires? 研究人员研发完全可降解轮胎 Researchers say they have created a new synthetic rubber that could be used to make biodegradable tires. A team at Texas AM Universitys campus in the Gulf nation o
2016年VOA慢速英语(九)月
German Car Manufacturer Audi Creates Fuel From Air And Water 奥迪用空气和水合成新燃料 Creating an alternative green or carbon neutral fuel to replace gasoline has been the holy grail for scientists for many years. However, while there has
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