多元宇宙的概念自然地从宇宙的膨胀模型中产生。
The concept of a multiverse arises naturally from the inflationary model of the universe.
Love is the most important thing in the world, but music is pretty close.
The human mind is so complex and things are so tangled up with each other that, to explain a blade of grass, one would have to make a diagram of the universe.