And this is the pizza equation: The bigger the diameter of the pizza, the more bang for your buck.

披萨的直径越大就越划算。

The way you get finer and finer detail, better angular resolution out of telescopes is you build a bigger diameter aperture.

从望远镜中获得越来越精细的细节、更好的角分辨率的方法是建立更大直径的孔径。