▍原文 Kpop supergroup BTS performed to tens of thousands of fans in Seoul on Saturday in their first concert in more than three years, which saw authorities shut down the city’s historic downtown. The hour-long outdoor concert in Gwanghwamun Square was the group’s official comeback, after it helped make Korean pop music a global phenomenon before going on hiatus in 2022 while members fulfilled mandatory military service. They returned on Friday with a new album, which their record label said sold nearly 4 million copies in its first day, ahead of a global tour that starts next month, billed as the biggest in K-pop history. ▍語言點 1. perform to somebody 為某人表演 ·The band performed to a crowd of 50,000. 樂隊為五萬觀眾演出。 2. historic downtown （本文）首爾市中心擁有歷史建築和文化遺產的區域 3. 時間 + long 持續……時間的 4. Gwanghwamun /ɡwɑːŋhɑːmʊn/ 光化門（首爾景福宮的正門） 5. official comeback 正式回歸 ·official adj. 正式的，官方的 ·comeback n....