无论多么聪明的人,在他年轻时都曾说过或做过一些事情,后来回想起来会感到不快,以至于如果可能的话,他会很高兴地从记忆中抹去。
Human capital is the most important asset any country has.
Every breakthrough in laser technology brings us closer to solving mysteries that have puzzled scientists for decades.