To be human is to be vulnerable.
Mathematics is the art of giving the same name to different things.
生命的历史由A、T、C、G书写。
What a man can be, he must be. This need we call self-actualization.
Agriculture is the foundation of manufacture and commerce.
Sinopec must adhere to high-quality development, with technological innovation as its core driving force.
想要懂得今天,就必须研究昨天。