笔谈其一
“去门口等着,拴狗绳散步” 听着狗看了我一眼,随即又吐着舌头快步颠着去了门口.这狗每次听到这句话都是一个反应.狗跑去门口的时候,身上白里间黄的毛跟着翻飞,唾沫倒没有乱飞,...
In mathematics you don't understand things, you just get used to them.
In mathematics you don't understand things, you just get used to them.