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China has constructed more than 54,000 water conservancy projects in the Yellow River Basin over the past 80 years, as part of efforts to advance water conservancy infrastructure and the scientific development and utilization of water and hydropower resources, according to a news conference held on Friday.
周五举行的新闻发布会介绍，80 年来，我国在黄河流域建成各类水利工程 5.4 万余处，持续推进水利基础设施建设，促进水资源和水能资源科学开发利用。
The Yellow River has maintained a continuous flow for 27 consecutive years, with the water quality of its mainstream remaining at Class II standard for nearly four years, the press conference held by the State Council Information Office on 80 years of Yellow River governance revealed.
国务院新闻办举办的黄河治理 80 周年新闻发布会披露，黄河已连续 27 年不断流，干流水质近四年稳定保持 Ⅱ 类标准。
The compliance rate for ecological flows in key rivers and lakes in the Yellow River Basin has exceeded 90 percent, the press conference noted.
发布会指出，黄河流域重点河湖生态流量达标率超过 90%。
China classifies surface water quality into five grades, with Class I being the best quality. Ecological flows refer to water flows that affect populations, communities and ecosystems, among others.
我国将地表水水质划分为五类，Ⅰ 类水质最优。生态流量指影响生物种群、群落及生态系统等方面的水量。
conservancy /kənˈsɜːvənsi/n. 水利；保护
basin /ˈbeɪsn/n. 流域；盆地
consecutive /kənˈsekjətɪv/adj. 连续的
ecosystem /ˈiːkəʊsɪstəm/n. 生态系统
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