环境科学应当以人为中心，也只能以人为中心，人类的利益是认识、评价、改造、治理环境的出发点，自然界本身无利益可言。
Therefore environmental science should be and can only be centered around man, with human interests being the starting point in understanding, evaluating, transforming and harnessing environment.
针对灌区工程建设和运行管理中出现的一系列环境问题，提出了灌区治理与改造的措施。
Aimed at a series of environmental problems in the construction and operation management in the irrigation district projects, the counter-measures of treatment and rehabilitation are proposed.
洛阳石化总厂五联合车间通过技术改造和加强管理，对各类有毒有害气体污染进行治理，环境保护取得显著成效。
No. five unit of Louyang Petrochemical Complex treated all kinds of harmful gas by technical reformation and environment management. Its environment protection has obtained remarkable effect.
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