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字号:
1. descendant n.后裔，后代
2. tuberculosis n.结核病；肺结核
3. over millennia 数千年来
4. urbanite 都市人
5. nomadic a.游牧的，流浪的
6. zero vt. 1.把...调整归零;对...作归零校正 2.把...减少到零
7. leprosy n.麻疯病
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60秒科学:城市生活增强感染性疾病抵抗力
时间:2010-09-28 11:51:30 来源:scientificamerican 编辑:keke 每天三分钟英语轻松学
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