我是碧昂丝,永远都是。
大树恨枝干上没有树叶,不要怨怪是太阳偏心故意晒偏。
耐心是交易中的美德;不要急于做出决定。
"To understand perception, study its role in adaptation."
Mathematics is not a spectator sport. You have to do it to understand it.