单词：acumulative temperature
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Cells cannot remain alive outside certain limits of temperature and much narrower limits mark the boundaries of effective functioning. Enzyme systems of mammals and birds are most efficient only withi
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The Tesla Model S finished the first half of this year with 8% of the luxury car market in the U.S. The pricey PEV (Plug-in electric vehicle) outpaced such famous luxury car models as the Audi A8 and the BMW 7-series. What is striking is that Tesla,
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Some bacteria have adapted to super cold environments for millions of years. And scientists have isolated some of the essential genes that allow bacteria to tolerate their harsh living conditionsbecause these same genes might help in the creation of
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Lexington 列克星敦 The long road home 回家的路还长着呢 How Osama bin Laden's death, and life, have changed America 奥巴马如何对待奥萨马本拉登之死，无形之中，已经影响了美国 May 5th 2011 | from the print edition
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As years passed market forces joined Communist propaganda chiefs as a second boss. 随着时间的推移，市场力量以二把手的身份加入了宣传。 Early shows were dominated by male characters and mostly watched by men. 早期的电视剧以
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