数学是一门活生生的学科,随着新的思想和发现不断演变。
The future belongs to those who see possibilities before they become obvious.
There are no hard distinctions between what is real and what is unreal, nor between what is true and what is false. A thing is not necessarily either true or false; it can be both true and false.
从我们记事起,妈妈就是一个中年妇女了,可谁又知道,她也曾是个花季少女。
The major problems in biology are not solved by new techniques, but by new ideas.