Mathematics is not a deductive science—that's a cliché. When you try to prove a theorem, you don't just list the hypotheses and then start to reason. What you do is trial and error, experimentation, guesswork.

跨行业和政府的合作对于推动能源转型取得有意义的进展至关重要。

If you're lonely when you're alone，you're in bad pany。

You have to fight to reach your dream. You have to sacrifice and work hard for it.

一个品牌的力量取决于其背后的人。