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按照计划,航天飞机将于2010年退出历史舞台,它们的离去将标志着在美国羚羊谷开启的有着近半个世纪历史的航天飞机时代的结束。
According to the plan, the space shuttle will be withdrawn from the stage of history in 2010, and their departure will mark the end of the space shuttle era opened in the Antelope Valley in the United States for nearly half a century.