Competitiveness is usually taken to mean keen prices: if the price of cars produced in one country falls, foreign demand for them expands.

竞争力通常表现为低价：如果一国的汽车生产价下降，别国对该国的廉价汽车的需求就会上升。

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。

They have been less keen for us to see the Human Price.

我们想知道“人类价格”，他们却漠不关心。

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。