短缺乃是一种符号,它意味着价格被人为地保持在低于供求双方可以自由行事时的水平。
A shortage is a sign that somebody is keeping the price artificially lower than it would be if supply and demand were allowed to operate freely.
计算机科学中的挑战不仅仅是解决问题,而是以一种既高效又优雅的方式解决问题。
Small habits, big changes.