奇怪的是，爱因斯坦的相对论的确曾经预言过用这种方法可以造出黑洞，虽然没有一个人提到过风行的引力理论。

Curiously though nobody had ever shown that the prevailing theory of gravity Einstein's theory of general relativity actually predicts that a black hole can be made this way.

youdao

结合相对论和量子理论，提出一种量子引力的理论，它的动机之一是出于美学上的对统一各种自然作用力的渴望。

Part of the motivation behind the quest to marry relativity and quantum theory - to produce a theory of quantum gravity - is an aesthetic desire to unite all the forces of nature.

youdao

任何科学家都可以认为进化论是一个正在传播的理论，就像万有引力学说，广义相对论，大爆炸论一样。

Any scientist would say that evolution is a theory, just as gravity, general relativity, the Big Bang, and so forth are theories.

youdao