[机] 硫氰化汞

2005年NPR美国国家公共电台三月-Studies Find High Mercury Levels in the W

Studies that will be released today show that fish, birds and mammals in New England have significant amounts of mercury in their bodies. The studies find the toxic metal in some unexpected habitats and they suggest that power plants in the Midwest a

发表于:2018-12-17 / 阅读(141) / 评论(0)

2009年NPR美国国家公共电台7月

彭蒙惠英语：The Mercury Mess

The Mercury Mess By Samantha Levine / 2004, as first appeared in U.S. News nbsp; What are the dangers of mercury in fish? Can the mercury mess be cleaned up? 1 Are these fish safe to eat?” It’s a

发表于:2018-12-19 / 阅读(62) / 评论(0)

彭蒙惠英语

VOA慢速英语2013 How the 'Mercury 13' Led the Way for Women in the US Space Program

How the 'Mercury 13' Led the Way for Women in the US Space Program Im Steve Ember. And Im Barbara Klein with EXPLORATIONS in VOA Special English. Today we tell about a program in the nineteen sixties to train women as astronauts. Today they are known

发表于:2019-01-12 / 阅读(49) / 评论(0)

2013年VOA慢速英语(五)月

SCIENCE IN THE NEWS - Mercury in Fish / Life on Land / The G

SCIENCE IN THE NEWS - Mercury in Fish / Life on Land / The Goldman Environmental Prize By Broadcast: Tuesday, May 11, 2004 (THEME) VOICE ONE: This is SCIENCE IN THE NEWS, in VOA Special English. I'm B

发表于:2019-01-30 / 阅读(206) / 评论(0)

科技之光

MESSENGER Probe Sends First Mercury Images

The U.S. space agency(代理中介) has released the first ever image taken of the surface of Mercury from a spacecraft orbiting the planet. The black and white image, posted on the NASA website Tuesday, shows a surface pocked with craters of varying

发表于:2019-01-31 / 阅读(76) / 评论(0)

英语新闻

NASA Messenger Probe Set for Historic Orbit Around Mercury

The U.S. space agency NASAs Messenger probe（正直的，廉洁的） is scheduled to reach Mercury later this week, and become the first spacecraft to orbit the planet closest to the sun. During Messengers year-long orbital mission, scientists exp

发表于:2019-02-05 / 阅读(66) / 评论(0)

英语新闻

MESSENGER Spacecraft Will Be First to Orbit Planet Mercury

The U.S. space probe MESSENGER is poised to enter orbit around Mercury（水银） early Friday, Universal time, capping a nearly seven-year journey to the solar systems innermost planet. Scientists with the U.S. space agency, NASA, hope the orbiting

发表于:2019-02-05 / 阅读(54) / 评论(0)

英语新闻

英语听力：自然百科金星和水星旅行指南 Venus and Mercury-2

Ever wanted to be an astronaut? Imagine it was you, who was heading to the hot zone of the two inner planets, where would you go? What would you see? And how would you survive? The latest robotic machines have revealed more about these worlds than ev

发表于:2019-02-05 / 阅读(114) / 评论(0)

自然百科2012年

VOA常速英语2008年-Mercury Seen in New Light

By Paul Sisco Washington, DC 15 February 2008 Scientists have started analyzing data and images acquired when the Messenger space probe passed within 200 kilometers of the planet Mercury last month. It was the first flyby of the solar system's inner-

发表于:2019-02-06 / 阅读(97) / 评论(0)

VOA常速英语2008年（二月）

英语听力：自然百科金星和水星旅行指南 Venus and Mercury-7

Like Mercury, the earth takes a beating from the sun's violent temper. Flares, sun storms and other solar hissy fits can cause electronic mayhem for the satellites that roam above our heads. Fortunately, the earth is protected from this radiation by

发表于:2019-02-15 / 阅读(176) / 评论(0)

自然百科2012年

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学英语单词

5-methylthiomethyl-2'-deoxyuridine