—— 请按键盘 空白键 开始游戏 ——

向高处攀登的奋斗本身足以充实一个人的心灵。必须想象西西弗斯是幸福的。
在分子水平上理解疼痛为靶向治疗打开了大门。
The dog is a friend of man because it judges him not by his station.
The riddle does not exist.