发现恒星围绕银河系中心的超大质量黑洞运行是天体物理学的一个转折点。
The discovery of stars orbiting the supermassive black hole at the galactic center was a turning point in astrophysics.
小说是一种探索的形式，一种提出没有答案的问题的方式。
"The world is a book, and those who do not travel read only one page."
Only those who will risk going too far can possibly find out how far one can go.
