translation.en: And, in fact, it's the best evidence we have to date for not only existence of a supermassive black hole at the center of our own galaxy, but any in our universe.
translation.zh: 事实上，这是我们目前所拥有的最好的证据 不仅因为我们星系中存在的巨大黑洞 在我们的整个宇宙也存在