—— 请按键盘 空白键 开始游戏 ——

The past is always tense, the future perfect.
Errors, like straws, upon the surface flow; he who would search for pearls must dive below.
跨国合作对解决全球粮食安全挑战至关重要。
为何一个人建了一堵墙,另一个人马上就想知道墙的另一边是什么?
Psychology must be a science of phenomena, not noumena.