—— 请按键盘 空白键 开始游戏 ——

指事物之间相互依存、相互制约的关系。
每个数学问题都有一个解决方案;只是需要时间和努力去找到它。
We must remember that literature is not just entertainment, it has a deeper meaning.
The steel industry must embrace sustainability or risk becoming obsolete.
The human being is not the lord of beings, but the shepherd of being.
研究中最大的回报是知道你的工作可以拯救生命。