—— 请按键盘 空白键 开始游戏 ——

The Liskov Substitution Principle is a fundamental concept in object-oriented programming, ensuring that derived classes can be used in place of their base classes without altering the correctness of the program.
在化学中,就像在生活中一样,最具变革性的反应往往发生在学科之间的边界上。
There is only one good, which is knowledge, and one evil, which is ignorance.
"The only limit to our realization of tomorrow will be our doubts of today."
The most exciting breakthroughs often come from unexpected places.
The work of art is a scream of freedom.
一个人只要能够生活就感到满足的话,他就会生活的很愉快。我们愈不知道忍受,我们愈感到痛苦。