单词：extinctions
[化] 消光; 熄灭
n. no longer active; extinguished
n. no longer in existence
n. the reduction of the intensity of radiation as a consequence of absorption and radiation
单词：extinctions 相关文章
It was the largest of the five major mass extinctions in earth's history, well before the dinosaur killer 66 million years ago. What's called the end Permian extinction 252 million years ago, wiped out 96% of aquatic species and 70% of species on lan
2014年Scientific American(二)月
It exploded with the force of a million nuclear bombs and unleashed the power of the sun. 它爆炸的威力相当于一百万枚核弹，释放出太阳的能量。 It set alight the entire biomass of earth and cooked the atmosphere. 它点燃了地球
侏罗纪搏击俱乐部
考试日期： 2012 年 11 月 3 日 Reading Passage 1 Title: The dinosaurs footprints and extinction Question types: YES/NO/NOT GIVEN, Summary 文章内容回顾 文章从恐龙的脚印开始讲恐龙的灭绝。 英文原文阅读 Mass Extinction
雅思机经
[11] Muller's breakthrough was to find a way to date
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Unfortunately, having had his insight, Smith was curiously uninterested in understanding why rocks were laid down in the way they were. I have left off puzzling about the origin of Strata and content myself with knowing that it is so, he recorded. Th
万物简史
By David McAlary Washington 10 May 2006 There is new evidence in the case of the missing woolly mammoth. In fact, several species of large mammals in addition to the mammoth went missing at the end of
2006年VOA标准英语（五月）