Spacewalking astronauts installed an 88-million-dollar spectrograph designed to detect faint light from faraway quasar .
太空漫
宇航员安装8．8千万美元的光谱仪，用于探测来自遥远
星体的微弱光线。
Spacewalking astronauts installed an 88-million-dollar spectrograph designed to detect faint light from faraway quasar .
太空漫宇航员安装8．8千万美元的光谱仪，用于探测来自遥远星体的微弱光线。
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安装新摄像机了。
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