基本解释巨星分支星英汉例句双语例句A66 is a red star located at the lowest end of the red giant branch (near the top of the sub-giant branch) of the globular cluster M4.A66是位于球状星团M4红巨星支最底部（近亚巨星支顶部）的一颗红星。giant-branch star更多例句