在这种情况下，即使存在边际效用递增，人们也并不必然是专门消费某商品。

In this case, even with increasing marginal utility, we do not necessarily get specialization in consumption.

youdao

消费者基于消费效用最大化的目标实施消费行为，面对商场繁杂的促销形式会依据机会成本、边际效用递减规律等原理选择与黄牛党进行交易。

Confronted with the complicated forms of sales promotions conducted by sellers, consumers will trade with scalpers under the rules of opportunity cost, diminishing marginal utility and other theo.

youdao

若没有预算约束，个人将不断增加X, Y, Z……的消费，直到它们的边际效用为零。

Without a budget constraint, the individual would continues to increase his consumption of X, Y, z,...... until their marginal utilities became zero.

youdao