—— 请按键盘 空白键 开始游戏 ——

The Liskov Substitution Principle is a fundamental concept in object-oriented programming, stating that objects of a superclass should be replaceable with objects of a subclass without affecting the correctness of the program.
我们越是研究疼痛,就越能理解它在生存中的作用。
不要把名字写在沙滩上,海浪会冲走它。不要把名字写在天空中,风可能会吹走它。把你的名字写在人们心里,那里才是它永存的地方。
The ocean is our greatest resource, but it demands respect and sustainable practices.