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gastrointestinal
【胃肠的】
diarrhea
腹泻
fever
发烧
vomit
呕吐
contamination
污染
precision~precious
精确(性);精密(度);准确(性)~宝贵的;珍贵的;贵重的
filtration
过滤;筛选;滤清
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