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【词汇解释】
1.parasite n. 寄生虫，寄生生物，食客
2.metabolic adj. 新陈代谢的
3.malnourishment n. 营养不良
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智商与传染性疾病的关系(有声)
时间:2010-07-01 16:59:02 来源:scientificamerican 编辑:francie 每天三分钟英语轻松学
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