—— 请按键盘 空白键 开始游戏 ——

出自晋·葛洪《抱朴子·博喻》。用美玉做成的船和桨,不能用于水上航行;用黄金做弓,玉石做弦,仍没有射箭的功能。(笔杆子 rendoc.com)
"一个好的摄影师知道何时打破规则。"
Life is about creating yourself.
I'm not interested in the nice and pretty. I'm interested in the intense and the emotional.
Natural experiments are a powerful tool for understanding causal relationships in the real world.