单词：surface density
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Well, hearing that Odyssey had found subsurface water on Mars was enormously exciting for somebody who is involved in planning to send humans to Mars. Water has a number of important uses for us. At t
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Scientists and politicians have gathered in the Indonesian city of Manado for the World Ocean Conference. They are discussing the role of oceans in mitigating climate change and how climate change affects the world's seas, but their efforts are hamp
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Climate change negotiators from 173 countries have agreed on an agenda after days of bickering over the scope of talks left little time for substantive discussions. The disagreement highlighted deep divisions between developing and rich countries on
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