This USGS survey missed the chemicals of perhaps greatest concern: antibiotics.
USGS的調查中,少了一項可能最讓人關切的化學物質: 抗生素.
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Geological Survey ( USGS ) share responsibility for the satellites'space and ground segments.
分別承擔衛(wèi)星的太空部分和地面部分的工作.
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