The constitution of design standard of flood control in hydropower station is an important technical policy.
水电站防洪设计标准的制定是一项重要的技术政策。
The most important problem of city flood-control planning is to choose reasonable flood-control standard.
城市防洪规划的首要问题，就是选择合理的防洪标准。
The main reasons of worsening marine climate are the increase of global greenhouse effect, over-exploitation in urban development and low standard of flood control projects.
全球温室效应加剧，城市开发建设过度和防洪工程标准偏低是海洋灾害气候加剧的主要原因。
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