Sent_en: 2ja It was then delayed until February 27, but was then delayed indefinitely on February 20 after NASA discovered an issue with the hydrogen control valves.
Sent_yy: それから打ち上げは２月２７日まで遅れたが、NASAが水素制御弁で問題を発見したあと２月２０日に無期限に遅れた。