当它们离开主序时，它们会成为鲜红色的超红巨星，最终变得足够热，以至于能够将碳聚变为更重的元素。
When they leave the main sequence, they become a bright red supergiant, and eventually become hot enough to fuse carbon into heavier elements.
当它们离开主序时，它们会成为鲜红色的超红巨星，最终变得足够热，以至于能够将碳聚变为更重的元素。
When they leave the main sequence, they become a bright red supergiant, and eventually become hot enough to fuse carbon into heavier elements.
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