特朗普在联大演讲：上楼时滚梯卡住了，发言时提词器坏了，多年前竞标过大楼翻新工程

Core Points - The speech by President Trump at the 80th United Nations General Assembly was marked by technical difficulties, including a malfunctioning escalator and teleprompter [1] - Trump mentioned his past experience as a real estate developer, stating that he had bid for renovation projects of the UN building but did not win the contract [1] - Since Trump's inauguration in January, the U.S. has reportedly halted payments to the UN, accumulating over $3 billion in unpaid dues, including more than $820 million for the regular budget due in 2025 and outstanding peacekeeping funds from previous years [1] Group 1 - Trump's speech faced technical issues with the escalator and teleprompter [1] - Trump highlighted his previous bid for UN building renovations during his time as a real estate developer [1] - The U.S. has significant outstanding payments to the UN, totaling over $3 billion [1] Group 2 - The U.S. owes more than $820 million for the 2025 regular budget allocation [1] - The unpaid dues include amounts from previous years related to peacekeeping operations [1]