As the nuclear burning moves outward to the fresh material in a shell surrounding the core, the star bloats into a so-called red giant.

当核燃烧向外进行到核心周边壳层的新物质时，恒星会膨胀成所谓的红巨星。

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As the nuclear burning moves outward to the fresh material in a shell surrounding the core the star bloats into a so-called red giant.

当核燃烧向外进行到核心周边壳层的新物质时，恒星会膨胀成所谓的红巨星。

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