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All the forecasts, plans, and anticipations cited above have failed so miserably because their authors and promoters thought the transitions they hoped to implement would proceed unlike all previous energy transitions, and that their progress could be accelerated in an unprecedented manner.
出自-2015年12月阅读原文
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Meanwhile, tuition has soared, leaving graduating students with unprecedented loan debt.
出自-2012年6月阅读原文
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What is happening now is historically unprecedented.
出自-2010年12月阅读原文
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As Vaclav Smil points out, "All the forecasts, plans, and anticipations cited above have failed so miserably because their authors and promoters thought the transitions they hoped to implement would proceed unlike all previous energy transitions, and that
2015年12月六级真题（第一套）阅读 Section B
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Online security cameras, intelligent lighting and a wealth of sensors that control both temperature and air quality are offering an unprecedented level of control, efficiency, and improvements to what were once classed necessary costs when running a busin
2017年12月六级真题（第二套）阅读 Section C
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This means an unprecedented number of people are surviving longer in conditions requiring expert support.
2018年12月六级真题（第二套）听力 Section C