可唔可以用中文話比我知點解:
free good 不等於 plentiful in supply
economic good 不等於 great in demand
收錄日期: 2021-04-13 16:05:25
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20080917000051KK01783