red giant（红巨星）是什么意思？音标发音+图解场景

红巨星 /ˈɹɛd ˈdʒaɪənt/ n

English: red giant · 红巨星

释义：An old star whose hydrogen reserve has been exhausted; its luminosity can be 100 times that of the Sun.

这个词出现在以下图解场景（1）