—— 请按键盘 空白键 开始游戏 ——

我不是说唱歌手,我是一个地理的传奇。
The duty of a true patriot is to protect his country from its government.
医学研究是一场马拉松,而不是短跑——耐力比速度更重要。
To understand the electron is to understand the foundation of our technological civilization.