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 artificial activity 添加此单词到默认生词本
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  1. The reed marshes are diminished because of artificial activity, village civilization and concreted river bank in middle and small rivers of China, its effect of purify water quality is lost.
    我国中小河流两岸自生的芦苇群落由于人类活动的严重干扰、村的城市化和河岸的混凝土化,导致芦苇自然群落大面积减少,其具有的净化水质等环境保护作用在丧失。
  2. For example, the artificial modification of rain at New York City may suggest a seeding activity just a few miles upwind of the metropolis.
    比如说,对纽约市进行人工降雨可能意味着在该市上风不过几英里处进行一次撒播作业。
  3. The powdery midew resistance of new selected muskmelon strain1(98- F-Y-4-16-7-7-1-1-3-3) was identified by the methods of natural infection in open field, artificial inoculation at seedling stage and isoenzyme
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