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Apple tree 苹果树 中英歌词： Apple round, apple red, Apple juicy, apple sweet, Apple apple, I love you, Apple sweet, I love to eat. 苹果树 苹果圆,苹果红。 苹果多汁,苹果甜。 苹果苹果,我爱你。 苹果甜,我爱吃。
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This is Scientific American's 60-Second Science. I'm Adam Hinterthuer. Got a minute? Farmers fertilize their fields to get the maximum meal from their crops. But the effects of these loads of nitrogen and phosphorous extend beyond the field and past
Scientific American(三)月
Tree Deaths Linked to Climate Change Stanford University graduate student William Anderegg has seen this forest die-off firsthand. His doctoral thesis documents the impact of drought on trembling aspen, the most common tree in North America. These ar
VOA标准英语2012年(九月)
Scientist uses tree rings to reconstruct 13th century climate Art Chimes | Washington, DC 05 April 2010 Photo: Photos.com Related Links: Angkor paper (full text) Buckley lab We started seeing these big, giant periods of drought that took place around
VOA标准英语2010年(四)月
Prehistoric Amber Reveals Natural Ancient Alliance Scientists say a piece of amber - recently found in India and dating back at least 52 million years - offers proof of the ancient relationship between fungi and flowering trees, which sustains modern
VOA标准英语2012年(二月)
A new report from The World Bank predicts that China's renminbi will join the U.S dollar and the euro as dominant international currencies sometime in the next 10 to 15 years. Some economists say is a major realignment in the global economic order, w
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