强寒潮或侵袭美40个州，特朗普：环保主义者们能否解释下全球变暖

Core Viewpoint - The article highlights a statement from U.S. President Trump regarding an unprecedented cold wave expected to impact 40 states in the U.S., questioning the narrative around global warming [1] Group 1 - The cold wave is described as a situation that has never been seen before, affecting a significant portion of the United States [1] - Trump's previous characterization of global warming as a hoax is referenced, indicating a longstanding skepticism towards climate change narratives [1]