2017考研英语拓展阅读：北京雾霾含60余种抗药菌

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    　　2017考研英语拓展阅读：北京雾霾含60余种抗药菌
    Scientists have identified bacterial genes that lead to antibiotic
resistance, including several that can be resistant to most powerful
antibiotics, in air samples from Beijing, which is frequently cloaked in heavy
smog,
    科学家已经在来自北京的空气样本中鉴定出导致抗生素抗药性的细菌基因，包括可以对抗最强抗生素的细菌基因，这种细菌基因时常隐藏在浓重的雾霾之中。
    Researchers from the University of Gothenburg in Sweden analysed 864 DNA
samples taken from humans, animals and environments worldwide and found Beijing
smog carried the largest number and types of genes identical or highly similar
to antibiotic resistance genes (ARG).
    来自瑞典哥德堡大学的研究人员分析了来自全世界的人类、动物和环境的864个DNA样本，发现北京的雾霾中携带的与抗生素抗药性基因(ARG)相同或高度相似的基因数量最大且种类最多。
    Microbial communities from Beijing smog harboured as many as 64.4 different
types of ARG.
    来自北京雾霾的微生物群拥有多达64.4种不同类型的抗生素抗药性基因。
    The researchers also identified in the Beijing smog metagenomes that
contained several genes resistant to carbapenems, a class of last-resort
antibiotics for treating challenging bacterial infections.
    研究人员还鉴定出北京雾霾的元基因组中含有几种具有碳青霉烯类抗药性的基因，碳青霉烯类是用于治疗具有挑战性细菌感染最后求助的抗生素。