[问答题]
Describe a red giant za9sp* 8 i*mokrh7ww do.s pq375.v ygstar. List soha1g e4 rx/e,*eiie3 eme of its properties.
参考答案: A red giant star is extremely large in size, it has a very high luminosity, but it has a relatively cool surface temperature that causes it to be red in color.
