机会成本是指采取这种行为而没有采取另一种选择时所放弃的机会或所招致的成本。也就是说，必须把失去的机会作为成本来计算，并且它所关注的是实际经济成本或在物品是稀缺的世界上作出决策的后果。现在让我们运用这一思想来考察买（商品）房与租（商品）房这两种选择。（选择 The opportunity cost is the opportunity or cost incurred in taking such an action without taking another option. That is, the lost opportunity must be calculated as cost, and it is concerned with the real economic costs or the consequences of making decisions in a world where the goods are scarce. Let us now use this idea to examine the two options of buying (commodity) rooms and renting (commodity) rooms. (select