The level of pollution in the river was falling.
该河流受污染的程度其时正在降低。
The reporter made a survey of river pollution.
记者对河流污染问题进行了调查。
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 study of this paper is significant to solve the pollution in tidal river.
该研究成果对潮汐水域的水污染控制具有一定的理论价值和实际意义。
Severe pollution has made one-third of China's Yellow river unusable, according to new research.
根据新的研究，严重的污染令中国黄河有三分之一的水不能使用。
The serious pollution of the Ganges River has become a hot topic of discussion.
恒河严重地被污染已成热门新课题。
Managing pollution of a great river is a challenge but it can be done.
管理长江的污染是一项挑战，然而确是可实现的。
Managing pollution of a great river is a challenge but it can be done.
管理长江的污染是一项挑战，然而确是可实现的。
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