To investigate the influence of river pollution on environment, especially formation of acid rain.
探讨河网严重污染后对环境的影响，尤其是对酸雨形成的影响。
The family environment has important effects on the formation of children's personality.
家庭环境对儿童个性的形成具有重要影响。
The natural environment is the basis for the formation of cities.
自然环境是城市形成的基础。
The formation of disposition has something to do with environment.
性格的形成又与环境有关。
The formation of disposition has something to do with environment.
性格的形成又与环境有关。
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