Due to the globe warming-up nowadays, the shortage of water resources becomes a long-lasting environmental problem that threatens human survival.
由于现代全球气候变暖,水资源短缺将是长期困扰人类的生存环境问题。
The problem of climatic change caused by the atmospheric CO2 content increasing is paid close attention by people . The globe warming is a common concern of most scientists .
大气中CO_2含量升高引起的气候变化是目前人们十分关注的问题,地球变暖是不少科学家的共同看法。
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