特朗普在会见非洲领导人时发表讲话称，非洲经济潜力巨大，从援助转向与非洲的贸易往来，今天还将讨论移民问题。

Core Viewpoint - The speech by Trump emphasizes the significant economic potential of Africa and indicates a shift from aid to trade relations with African nations [1] Group 1 - Trump highlighted the vast economic potential of Africa, suggesting that the continent is ripe for investment and trade opportunities [1] - The discussion will also include immigration issues, indicating a multifaceted approach to U.S.-Africa relations [1]