Ricardo, but not Keen, used a "labor theory of price" in which a commodity's "innate worth" was the amount of labor needed to produce it.
但不是Keen,使用了“价格劳动论”,认为商品的“内在值”指生产它需要的劳动量。
Those who are particularly keen to get their hands on a copy of a new book, for instance, may be willing to pay a higher price for it, which may explain the persistence of expensive hardbacks.
比如那些特别热衷于获得版权书的人会愿意支付较高的价格。这可以解释坚持买昂贵精装书的现象。
She reveals that she has already acted as an egg donor for a wealthy British couple based in Dubai, and is keen to do so again if the price is right.
她透露,她曾经捐助过迪拜一对富裕的英国夫妇,并渴望再次这样做,如果价格合适。
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