—— 请按键盘 空白键 开始游戏 ——

And when his audience grew bored, he would spring into the air and do a back flip with a half twist.
The most difficult thing in life is to know yourself.
人的精神本喜欢清净,但被心所扰乱;人心本喜欢宁静,但被欲望所牵引。
一个好的数学家是懒惰的,但要以建设性的方式。
The universe is not only stranger than we imagine, it is stranger than we can imagine.
Technological innovation in mining isn't about replacing people, but about making their jobs safer and more productive.