—— 请按键盘 空白键 开始游戏 ——

A Book of Verses underneath the Bough, A Jug of Wine, a Loaf of Bread—and Thou Beside me singing in the Wilderness— Oh, Wilderness were Paradise enow!
Don't search for defining moments because they will never come. The moment that define you have already happened, and they will already happen again.
相关系数的可能误差不是一个固定的量,而是取决于样本的大小。
白云谦卑地站在天边,晨光给它披上壮丽的光彩。
To kill an error is as good a service as, and sometimes even better than, the establishing of a new truth or fact.