宇航员在第二次太空行走中奋力完成了哈勃空间望远镜的至关重要的修复。
Astronauts have struggled to complete the most critical repair to the Hubble space Telescope in a second spacewalk.
“发现”号航天飞机的宇航员们完成了他们任务清单上的另一项任务——第二次太空行走。
Astronauts aboard the space shuttle Discovery can cross another item off their "to-do" list: a second spacewalk.
S4 的激活操作将会持续到STS-117的第二次太空行走中，这次太空行走预定在星期三的下午开始。
S3/S4 activation activities will continue during STS-117's second spacewalk, slated to take place Wednesday afternoon.
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