新手上路
原帖由 zneb 於 2007-10-27 16:19 發表 機會成本-口- ......完全符合經濟學原理
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原帖由 vistasurvivor 於 2007-10-28 06:21 發表 u cant say the opportunity cost of playing 3.7d is the choice of playing 4.X, unless u hv such an assumption: u only hv sufficient time to play either version once since if u hv sufficient time to ...