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1. malaria n.疟疾
2. vivax n. 疟原虫(指引起疟疾的单细胞动物)
3. parasite n.寄生生物；寄生虫
4. negativity n. 否定性, 消极性
5. susceptible a.易受影响的；过敏的；能经受的
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60秒科学:人们对疟原虫不再免疫
时间:2011-02-25 10:04:35 来源:scientificamerican 编辑:sunny 每天三分钟英语轻松学
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