环境问题是现在社会热点，尤其是城市环境问题。
Environmental problems are hot-spots of the society, especially the urban environmental problems.
地面沉降与地下水资源是深受关注的城市环境问题。
Land-surface subsidence and groundwater resources have drawn a great attention of the public in urban environment problems.
环境噪声已成为当今我国城市环境问题的四大公害之一。
Today, ambient noise has already became one of the four public hazards in China urban environment issue.
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