stellar brightness

例句：

1. 1. The staris so bright that it can be seenfrom the city's center.
   那颗星太亮了，可以从市中心看到。
2. 2. Theastronomers used a telescopeto measure the stellar brightness of thegalaxy.
   天文学家们用望远镜测量了这个星系的恒星亮度。
3. 3. The star'sbrightness is due to its high massand distance from the sun.
   这颗星之所以明亮，是因为它的质量高且离太阳远。