南非总统拉马福萨：美国应继续在二十国集团中发挥关键作用。

Core Viewpoint - South African President Ramaphosa emphasizes the importance of the United States continuing to play a key role in the G20 [1] Group 1 - The G20 is a critical platform for global economic governance, and the U.S. involvement is essential for addressing international challenges [1] - Ramaphosa's statement reflects the broader sentiment among emerging economies regarding the need for U.S. leadership in multilateral forums [1]