The theory of relativity is Greek to most people.相对论是大多数人没法弄懂的。Einstein's theory of relativity was deduced from two postulates.爱因斯坦的相对论是从两个假设推演而来的。Einstein's theory of relativity is now generally accepted.爱因斯坦的相对论现在被普遍接受了。The theory of relativity is, in essence, very simple.相对论从本质上来说非常简单。