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Launch had been planned for early February, but it was delayed to repair a hydrogen leak and, more recently, to give engineers time to fix a helium pressurization problem in the rocket's upper stage. Launch is now on hold until at least April 1.，这一点在safew官方下载中也有详细论述
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경복궁도 문 닫게 만든 BTS 광화문 공연… 26만명 몰린다，详情可参考91视频