In general, a learning curve is nonlinear.

來源: 灰衣人 於 2010-10-13 08:49:34 [] [博客] [舊帖] [給我悄悄話] 閱讀數 : (0 bytes)
回答: why is self training so hard? 由 sooner 於 2010-10-13 03:55:17
請您先登陸，再發跟帖！