—— 请按键盘 空白键 开始游戏 ——

Innovation in leather tanning isn't just about new chemicals; it's about rethinking the entire lifecycle of the material.
He who fights with monsters should be careful lest he thereby become a monster.
我的粉丝是我的动力。
The attosecond timescale is to electron motion what the high-speed camera was to studying animal locomotion.