美国航天局的前宇航员焦立中说，在与世隔绝的环境中保持清醒的另一个关键的就是要做一些有意义的事。
The other key to staying sane in an isolated environment is meaningful work, Leroy Chiao said, a former NASA astronaut.
华裔宇航员焦立中作为美国宇航局“远征十队”指挥官，于2004年10月至2005年4月在国际空间站工作和生活了半年多的时间。
Chiao lived aboard the International Space Station from October 2004 to April 2005 as commander of NASA's Expedition 10.
来自欧洲航天局的宇航员维托里在国际空间站呆了八天，沙里波夫和焦立中则从去年10月起就呆在轨道实验室里了。
Vittori, a European space Agency astronaut, had spent eight days on the international space station, while Sharipov and Chiao had been on the orbiting lab since October.
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