单词：earth's surface diffraction
单词：earth's surface diffraction 相关文章
Earth's Surfaces Are Always Moving 地球表面一直在运动 From VOA Learning English, this is Science in the News. Im Anna Matteo. And Im Christopher Cruise. Scientists who study the Earth tell us the continents and ocean floors are always moving
2014年VOA慢速英语(四)月
Friday is Moon Day, which commemorates the first human landing on the Moon on July 20, 1969. To mark the occasion, let's take a look at China's lunar exploration program. The Chang'e program China's lunar exploration program started in 2004. It is na
2018CRI中国国际广播电台
Broadcast: Jan 10, 2003 By George Grow This is the VOA Special English ENVIRONMENT REPORT. American scientists say rising temperatures on Earth's surface are forcing animals and plants to move to cool
VOA2003（上）-社会广角
If we could flip a switch and just turn off the Earth's magnetic field, it will take about 15,000 years to disappear, based on the rate of decay of the field that we've seen over the last 150 years. It's currently decaying at a rate that would see an
自然百科2011年
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加州英语分级G6