The Luanhe Basin is the ecological barrier for two cites of Beijin and Tianjin, and is the main water sources for two cities of Tainjin and Tangshan as well.

  • 滦河流域是北京、天津两市的生态屏障,也是天津、唐山两市的主要水源地。

  • 互联网摘选 2025-03-02 20:05:24

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