Data structures are the backbone of efficient algorithms.
过去是一个异国他乡;那里的人们做事方式不同。
The art of economics lies in understanding the subtle interactions between rules and behavior.
热闹荣华的光景,过后即生空虚凄凉;而清淡脱俗的作为,才能历久而更有意味。
Ideas are everywhere, but knowledge is rare.