如果通过一些不可思议转变的事件，就是说国会找到钱来建造一个新的外部燃料箱，仍然在用的两架宇宙飞船可以目睹延长它们正常运转生命。
If, by some strange turn of events, Congress were to find the money to build a new external tank, the two shuttles still in use could see their operational lives extended.
如果通过一些不可思议转变的事件，就是说国会找到钱来建造一个新的外部燃料箱，仍然在用的两架宇宙飞船可以目睹延长它们正常运转生命。
If, by some strange turn of events, Congress were to find the money to build a new external tank, the two shuttles still in use could see their operational lives extended.
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