The fifth-tallest building in the world, the Lotte World Tower, has opened in Seoul, South Korea. 世界第五高建筑乐天世界塔已在韩国首尔开业。 

The event was celebrated in a ceremony with a fireworks display that lit up the building and the sky. 该活动在仪式上庆祝，烟花表演灯光照亮了建筑物和天空。

The 123-story glass and steel structure is South Korea’s tallest building. It rises 555 meters above the Seoul skyline. 123层的玻璃和钢结构是韩国最高的建筑。 它上升了首尔的天际线555米。 

The tower features the world’s highest floor made of glass. From this observation area, visitors can look straight down to the busy traffic about one-half kilometer below. 该塔设有世界上最高的玻璃楼层。 从这个观察区域中，游客可以直视下方约一半公里的繁忙交通。 

The building also has the highest swimming pool in the world, as well as the world’s fastest elevator. The elevator can reportedly take passengers to the top of the building in just one minute. 该建筑物也是世界上最高的游泳池，也是世界上最快的电梯。 据报道，电梯可以在短短一分钟内将乘客带到建筑物的顶部。

The Lotte World Tower houses offices, personal residences and a seven-star hotel. The top 10 floors are used for public events and entertainment, including the observation deck and a rooftop restaurant. Attached is a large complex with a shopping mall, aquarium, movie theater, music hall and amusement park. Lotte World Tower房屋办公室，个人住宅和七星级酒店。 前10层楼用于公共活动和娱乐，包括观察甲板和屋顶餐厅。 附件是一个大型综合大楼，设有购物中心，水族馆，电影院，音乐厅和游乐园。 

The launch came during a troubled time for the Lotte Group, which is known for its international chain of supermarkets. The group’s chairman and some of his family members recently went on trial for fraud and other charges. 发射是在Lotte Group陷入困境的时期，该集团以其国际超市而闻名。 该组织的董事长和他的一些家庭成员最近因欺诈和其他指控而接受了审判。 

Lotte has also faced problems in China, where the government reportedly retaliated against it for providing land in South Korea for the U.S.-built THAAD anti-missile system. 洛特（Lotte）在中国也面临问题，据报道，政府因在韩国为美国建造的THAAD反导系统提供土地而对其进行报复。 

The building was designed by American architecture company Kohn Pedersen Fox (KPF). It cost about $3.6 billion to build. 该建筑是由美国建筑公司Kohn Pedersen Fox（KPF）设计的。 建造费用约为36亿美元。

The company said the design combines “a modern aesthetic with forms inspired by the historic Korean arts of ceramics, porcelain and calligraphy.” 该公司表示，该设计将“现代美学与受历史悠久的陶瓷，瓷器和书法艺术启发的形式结合在一起。” 

KPF also designed the building that used to be South Korea’s tallest building - Northeast Asia Trade Tower – which opened in the city of Incheon in 2014. KPF还设计了曾经是韩国最高建筑物东北亚贸易塔的建筑，该建筑于2014年在仁川市开业。 

Below is a list of the top 10 tallest buildings in the world. 以下是世界上十大建筑物的清单。