任何一件简单的东西如衬衫，买家或许知道他应该付多少钱，但这并不代表他知道一件衬衫值一般多少钱。
Think about any simple item, like a shirt.A shopper may know how much he or she paid for it, but that doesn't mean the consumer knows how much a shirt, in general, costs.
一位耳聋并且总是嫌东西太贵的老太太走进一家商店。她问店员：“这东西要多少钱？”
An old lady who was very deaf and who thought everything too dear, went into a shop and asked the shopman: 'How much this stuff?
任何一件简单的东西如衬衫，买家或许知道他应该付多少钱，但这并不代表他知道这件衬衫的成本。
Think about any simple item, like a shirt. A shopper may know how much he or she paid for it, but that doesn't mean the consumer knows how much a shirt, in general, costs.
任何一件简单的东西如衬衫，买家或许知道他应该付多少钱，但这并不代表他知道这件衬衫的成本。
Think about any simple item, like a shirt. A shopper may know how much he or she paid for it, but that doesn't mean the consumer knows how much a shirt, in general, costs.
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