心理学家必须是一个冷静的观察者。
The psychologist must be a dispassionate observer.
The past is a foreign country; they do things differently there.
灾难过后,人们失去的不仅是家园,还有社区。临时住房应该帮助重建这两者。
The interplay between analysis and algebra is the driving force behind many breakthroughs in number theory.