单词：lassard
单词：lassard 相关文章
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By Zulima Palacio Washington, DC 03 February 2006 watch Lassa report When it comes to dangerous jobs, we usually think of things like racing cars, testing explosives or exploring space. Actually, one
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In 1969, a doctor at a Yale University lab in New Haven, Connecticut, who was studying Lassa fever came down with it. 1969年，设在康涅狄格州纽黑文的耶鲁大学实验室里的一名医生在研究拉沙热的过程中倒下了，然而他活
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From time to time certain strains of virus return. 有几种病毒不时重复出现。 A disagreeable Russian virus known as H1N1 caused severe outbreaks over wide areas in 1933, then again in the 1950s, and yet again in the 1970s. 一种名叫H1N1的
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