要使婚姻长久,就需克服自我中心意识。
Men and women differ in their reproductive strategies because they have faced different adaptive problems throughout evolutionary history.
The best way to learn mathematics is to do mathematics.
希望是美好的,也许是人间至善,而美好的事物永不消逝。
体育必须是全人类和各社会阶层的共同遗产。