—— 请按键盘 空白键 开始游戏 ——

I always tell my students that it's okay to make mistakes, as long as you learn from them.
你生活一团糟是因为我。
The only way to learn mathematics is to do mathematics.
The challenge for media companies is to find new ways to reach audiences and to make money from it.
"The most dangerous thing is to pretend that everything is fine when it's not."