求翻译：SR-71保有在1974年9月1日创下的从纽约到伦敦的纪录：1小时54分56.4秒。（协和飞机飞行同样的路程要3小时20分，而最快的亚音速大型客机波音747则需要7小时。）是什么意思？

sr-71 to maintain the record on September 1, 1974, records from New York to London: 1 hour 54 minutes 56.4 seconds. (Concorde flying the same distance to 3 hours and 20 minutes, the fastest subsonic large passenger aircraft Boeing 747 takes 7 hours.)

There are warranty SR - 71 in September 1, 1974 from New York to record in the London of the record: 1 hours 54 minutes 56.4 seconds. (Place de la Concorde aircraft flying the same distance to be 3 hours and 20 minutes, and the fastest subsonic large Boeing 747 passenger aircraft will need to be 7 h

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SR-71 tenure on September 1, 1974 hit record from New York to London: 1 hour 54 minutes and 56.4 seconds. (Concorde flight to the same distance to 3 hours and 20 minutes, while the fastest subsonic Boeing 747 large passenger aircraft will take 7 hours. ）

正在翻译，请等待...