一个软件产品的价值模型可以是一个公式或是算法，它帮助我们估计在产品的生存周期中可以以什么样的价格卖出多少产品。
A value model for a software product can be a formula or an algorithm that helps estimate the number of licenses that can be sold, at what price, over the product lifecycle.
农产品的出现产生了可以储藏的剩余食物，也赋予土地以价值，相对平等的生存方式亦有了被打破的可能。
The invention of agriculture, which generates a surplus that can be stored and also gives value to land, permitted this to change.
又在《许三观卖血记》获得更深层的生命意识，“苦难与重复相依为命”，以“卖血”换得个人生存价值，升华生命意识；
And in A Story of XU San-guan Selling Blood, YU Hua has a profound awareness about life, which expresses the idea of suffering together with repetition.
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