blue supergiant

例句：

1. 1. The blue supergiant in the sky is a wonder of nature.
   天空中的蓝色超巨星是大自然的奇迹。
2. 2.The blue supergiant is so bright that it can be seen from space.
   蓝色超巨星如此明亮，以至于可以从太空中看到它。
3. 3. The blue supergiant has been studied for decades to understand its life cycle.
   蓝色超巨星经过几十年的研究，以了解其生命周期。