哈利法塔是世界第一高楼吗英语？

No, the Burj Khalifa is not the tallest building in the world. The title of the world's tallest building currently belongs to the Jeddah Tower in Jeddah, Saudi Arabia. The Jeddah Tower, which is still under construction, is set to surpass the height of the Burj Khalifa upon completion. The Burj Khalifa, located in Dubai, United Arab Emirates, held the title of the world's tallest building since its completion in 2010 until the Jeddah Tower started taking shape. It is worth mentioning that the Burj Khalifa is still an iconic landmark and one of the most famous skyscrapers globally, standing at a height of 828 meters. The race for constructing the tallest buildings showcases the continuous innovation and architectural advancements in various cities worldwide.