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 article discusses the challenges faced by President Trump during his speech at the 80th United Nations General Assembly, including technical difficulties with the escalator and teleprompter [1] - It highlights the significant financial obligations of the United States to the United Nations, noting that the U.S. has accrued over $3 billion in unpaid dues since Trump took office [1] Financial Obligations - The U.S. has outstanding payments totaling over $3 billion, which includes more than $820 million for the regular budget contributions due in 2025 [1] - The article mentions that the U.S. has not paid its UN dues since January 2017, indicating a significant lapse in financial commitments [1] - Additionally, the U.S. has unpaid contributions related to peacekeeping operations, further complicating its financial standing with the UN [1]