[医] 孔恩氏培养液(培养酵母菌)

VOA慢速英语2011--ut Fireflies and Possible Liquid Water o

SCIENCE IN THE NEWS - All About Fireflies and Possible Liquid Water on Mars CHRISTOPHER CRUISE: This is SCIENCE IN THE NEWS, in VOA Special English. Im Christopher Cruise. BOB DOUGHTY: And Im Bob Doughty. Today, we tell about evidence of liquid water

发表于:2018-12-07 / 阅读(67) / 评论(0)

2011年VOA慢速英语(八)月

60秒科学:Fog Found on Saturn's Moon Titan

Fog Found on Saturn's Moon Titan A study in Astrophysical Journal Letters reveals that Titan may be home to the familiar atmospheric condition known as fog--but made out of methane. Karen Hopkin reports The northeast just had its first big snow of th

发表于:2019-01-02 / 阅读(51) / 评论(0)

60秒科学

VOA标准英语2011-Life Batteries are Tomorrow's Innovations

Three-dimensional cell phones and batteries that last much longer are just two of the techonogies that could become commonplace in the next few years. For the fifth year, IBM has looked at the horizons of research, picked five technologies and announ

发表于:2019-01-07 / 阅读(27) / 评论(0)

VOA标准英语2011年(一月)

美国国家公共电台 NPR Names Written In Blood And Rust: Documenting Syria's Disappeared

RACHEL MARTIN, HOST: By many measures, Mansour Omari should not be a free man. The Syrian human rights activist spent years documenting the many abuses of the Syrian government, keeping track of the tens of thousands of Syrians who have disappeared i

发表于:2019-01-16 / 阅读(29) / 评论(0)

2017年NPR美国国家公共电台12月

英语听力：自然百科地球力场 Earth's Force Field—8

Easily confused by this idea, there has a big thawed iron inner core, so that I think it's just the bar magnet, just permanent magnet frozen in nad, and that's where causes all the magnetic field. But it's too hot inside the Earth, that can't happen

发表于:2019-01-22 / 阅读(46) / 评论(0)

自然百科2011年

2007年VOA标准英语-US Spacecraft Finds Signs of Seas on Saturn's B

By David McAlary Washington 14 March 2007 A U.S. spacecraft studying Saturn has found evidence of large seas on its biggest moon, Titan. But if they are seas, they would not be filled with water. Instead, as VOA's David McAlary reports, they would be

发表于:2019-01-30 / 阅读(72) / 评论(0)

2007年VOA标准英语（三月）

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学英语单词

2'-chloroacetoacetanilide