我不必那么害怕告别，因为告别不一定是永远的。
"I don’t have to be so afraid of good-bye, because good-bye doesn’t have to be forever."
能源行业不仅仅是开采资源，更是负责任地推动进步。
强调历史研究既要理解历史背景，又要保持学术批判性。
If you're lonely when you're alone，you're in bad pany。