学;Hubble was able to resolve six variable stars in M31.
勃望远镜能分辨梅西叶星云星团表31中
六颗变星。
勃(姓氏)勃太空望远镜Hubble was able to resolve six variable stars in M31.
勃望远镜能分辨梅西叶星云星团表31中六颗变星。
Two spacewalking astronauts have been able to install a new camera in the Hubble Space Telescope.
两名太空行走宇航员已经可以给勃望远镜安装新摄像机了。
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