过去是参考的地方,不是居住的地方。
The great and chief end, therefore, of men's uniting into commonwealths and putting themselves under government is the preservation of their property.
激光技术的每一次突破都让我们更接近解决困扰科学家数十年的谜题。
The key is to set realistic customer expectations, and then not to just meet them, but to exceed them — preferably in unexpected and helpful ways.
政事分散在地方,但大权集中在中央