成百上千的航天器发射到天空：从第一航空卫星，宇宙飞船，到现如今的航天飞机。
Hundreds of space vehicles have blasted into space: first satellites, then spaceships and now space shuttles.
团队合作会随时间推移而改善：美国国家运输安全委员会发现，其民用航空数据库中，73%的事故发生在机组人员一起飞行的第一天。
Teamwork improves with time: America's National Transportation Safety Board found that 73% of the incidents in its civil-aviation database occurred on a crew's first day of flying together.
泛美航空开创了第一个定期的国际航班。
Pan Am inaugurated the first scheduled international flight.
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