Pollution of water resource, water environment and the technology of purifying water are regarded increasingly.
水资源与水环境的污染以及现代水处理技术是人们日益关心重视的研究课题。
Water resource is a major natural resource and also an essential clement of environment.
水资源是一个较大的自然资源，并也是环境中必不可少的组成部分。
Water resource is a major natural resource and also an essential clement of environment.
水资源是一个较大的自然资源，并也是环境中必不可少的组成部分。
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