—— 请按键盘 空白键 开始游戏 ——

Language is a skin: I rub my language against the other. It is as if I had words instead of fingers, or fingers at the tips of my words.
气候变化不是对森林的未来威胁,而是现在正在运作的电锯。
量子密码学不依赖于数学问题的难度,而是依赖于物理学的基本定律。