Astronauts aboard the space shuttle Discovery can cross another item off their "to-do" list: 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。

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Astronauts have struggled to complete the most critical repair to the Hubble space Telescope in a second spacewalk.

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。

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Shuttle and station crew members are busy preparing for the mission's next spacewalk, pushed back for a second time to Saturday.

航天飞机和空间站的成员正在忙着准备这次任务的下一项太空行走作业。该项作业在经历第二次推后后定在了周六。

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