四肥居阿
边际成本Limit cost无谓损失Meaningless loss机会成本Opportunity cost比较优势Compare advantage完全竞争市场Complete competition market需求价格环境Need price environment 消费者剩余 Consumer surplus公有物品 Public product公有资源 Public resources外部性 Exterior均衡 Balanced供求法则Supply rule
优质英语培训问答知识库
