se it would be regrettable.I think what everyone truly wants to see isn't the quick conclusion of the high school phase and entry into university or various stages of society.It's more about changes i...轉碼失敗！請您使用右上換源切換源站閱讀或者直接前往源網站進行閱讀！them for one purpose, you have to give up other uses. The value of these abandoned opportunities is the opportunity cost of creating other values. Strictly speaking, whenever you do something, you ine...