irregular variable star

例句：

1. 1. The discovery of this new type of star has revolutionized our understanding of the universe.
   这种新类型的恒星的发现已经彻底改变了我们对宇宙的理解。
2. 2.This star is an example of an irregular variable, which means it's constantly changing its brightness and size.
   这颗星是不规则变星的一个例证，这意味着它的亮度和大小在不断变化。
3. 3. In the early days of astronomy, scientists used to study these stars as a way to understandhow the universe works.
   在天文学的早期阶段，科学家们曾经研究这些星星作为一种理解宇宙运作方式的方法。