VOA慢速英语:朝鲜退出东京奥运会

athlete –n. a person who is trained in or good at sports, games, or exercises that require physical skill and strength

infrastructure –v. the basic equipment and structures (such as roads and bridges) that are needed for a country, region, or organization to function properly

symbolize –v. to be a symbol of (something); an action, object or event that represents something else