urgent spacewalk repairs are being discussed for this week.
这周紧急空间行走维修方案正在讨论中。
they completed a six-and-a-half hour spacewalk on tuesday.
他们星期二完成了6个半小时的太空行走。
today marked the fifth and final spacewalk with a jumbo-sized crew.
今天会有大规模的宇航员第五次,也是最后一次太空行走。
two spare pumps are stored on the outside of the station. two of the americans on board are already scheduled to conduct a spacewalk on thursday for routine maintenance.