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两根茎同时擦一个洞

The 19th Group of Twenty (G20) Summit was held in Rio de Janeiro Brazil from Monday to Tuesday. In the face of geopolitical conflicts and economic uncertainties, the G20 Summit is expected to exert positive impacts and inject more stability into an unstable world, said Cui Shoujun, Professor and Director of the Institute of International Development Studies at the School of International Studies, Renmin University of China (RUC), in the W.E. Talk with China News Network.

永定河是北京的母亲河，自2019年实施生态补水、修复治理以来，经历了从断流到“重生”的巨变，如今的永定河水清岸绿，人水和谐，成为多种珍稀候鸟驻足的“驿站”。近日，永定河滞洪水库中堤的观鸟热潮，每天吸引市民约400人前来观鸟，据统计有亚洲漠地林莺、游隼、黑翅鸢、白尾鹞、金翅鹊、红脚隼等数十种珍稀鸟类在这里歇息。

为做好宣传管理工作，北京市永定河管理处创建了“以鸟会友”交流群，为“鸟友”提供探索、交流的平台。在永定河滞洪水库中堤开放运行过程中，北京市永定河管理处不断提升服务标准，听取市民合理性意见建议，通过引入共享单车、增设观鸟设备、补植花卉、设置便民咨询热线、市民意见留言簿等方式，不断满足市民滨水休闲、观鸟摄影等多种需求，营造安全、舒心的滨水休闲空间。