The power of mathematics comes from its ability to abstract and generalize, turning specific problems into universal truths.
小说是一种以现实为食但将其变形的体裁。
有些鸟儿天生就是关不住的,它们的羽毛太鲜明,歌声太甜美、也太狂野了,所以你只能放它们走,否则哪天你打开笼子喂它们时,它们也会想办法扬长而去。