地球自转不均匀性

CNN 2011-12-10

CNN News from here Atlanta, Georgia straight to your classrooms, Im Carl Azuz, this is CNN Student News. Today were starting something called a payroll tax. Heres the deal on the payroll tax from A to Z. Americans have been getting a break on their f

发表于:2018-12-20 / 阅读(45) / 评论(0)

CNN2011年(十二)月

Earth and Sky:Galactic Rotation 银河系自转

Galactic Rotation 银河系自转 Astronomers calculate there is ten times more matter in our Milky Way galaxy than we can actually see. Discover how the orbital motions of stars in the galaxy reveal dark matter -- on today's Earth and Sky. JB: I'm Joel

发表于:2019-01-02 / 阅读(129) / 评论(0)

(科普英语)Earth and Sky

电信专业英英词典G-1

Gain - This is an increase in signal power, due to a boost from an electronic device. Garbage - These are unwanted characters that appear because of either incorrect settings or noise. Gate - These ar

发表于:2019-01-03 / 阅读(57) / 评论(0)

电信英语

全球钟表今日将加“一闰秒”

Airlines, trading floors and technology companies are braced for chaos today as world timekeepers prepare to add a leap second to global clocks. 世界钟表今天要给全球的钟表加一闰秒，因此航班、交易所、科技公司正在为即将

发表于:2019-01-16 / 阅读(71) / 评论(0)

阅读空间

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

地球白天时间越来越长 670万年增加1分钟

Earth's days are getting longer but you're not likely to notice any time soon it would take about 6.7 million years to gain just one minute, according to a study published last Wednesday. 据上周三公布的一份报告显示，地球的白天时间正

发表于:2019-02-16 / 阅读(44) / 评论(0)

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appraise through comparison

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