Recruits spent 54 weeks on shuttle systems during their two-year basic training, Ross says.
罗斯说，新招募的成员在为期两年的基础训练中，需要花54周在航天飞机系统上。
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When VietNamNet's reporters spent ten days' under cover 'working in an industrial zone (IZ) near HCM City, almost all the workers they met did little but shuttle between factory and boarding house.
Astronauts work long hours and most of their time is spent on a day job that has nothing to do with flying the shuttle - for example, an assignment to help update the design of the shuttle cockpit.