这就是为什么价值来源于产品与服务。

That's how the value is derived from the product or service.

youdao

企业的生产活动中，最关键的投入与价值来源是知识。

In corporation operation, the most important input and value source is knowledge.

youdao

因此，价值来源是一个需要严肃对待和不容放松的问题。

Therefore the origin of value is a problem that should not be neglected but treated seriously.

youdao

So fat becomes a very valuable energy source.

所以脂肪是非常有价值的能量来源

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选