Noise emitted by vessels is one of the sources of urbanenvironmentalpollution.
船舶辐射噪声是港口城市环境公害的污染源之一。
2
The author of the status of urbanenvironmentalpollution and the causes are analyzed, and made several Suggestions.
对城市环境污染的现状和成因进行了分析，并提出了几点建议。
3
However, some factories move out of cities, and urbanenvironmentalpollution reduced. At the same time, it does not mean that China's environmental problems have been solved.