—— 请按键盘 空白键 开始游戏 ——

The sky is not the limit; it is the beginning.
"Randomized experiments are the gold standard for causal inference, but they are not always feasible."
"The stage is where the dead speak to the living."
造纸业有着丰富的历史,但我们必须始终向前看。
The ocean feeds billions, and it's our duty to protect it while harnessing its potential.