Two spacewalking astronauts have been able to install a new camera in the Hubble Space Telescope.
两名太空行走的宇航员已经可以给哈勃望远镜摄像机了。
Two spacewalking astronauts have been able to install a new camera in the Hubble Space Telescope.
两名太空行走的宇航员已经可以给哈勃望远镜摄像机了。
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