在生活中 ,没有什么东西能比水更有用更重要的了 ,从经济学的角度来说 ,就是水的使用价值大 ,可是一吨水才块把钱 ,即价值很小。而成千上万吨水才能换得的一颗钻石 ,除了能让人炫耀它的美丽精致外 ,几乎没有什么用途 ,即使用价值很小。为什么用途大的水价值却小 ,用途小的东西 In life, nothing is more important and useful than water, economically speaking, it is of great value in the use of water, but only a ton of water lumps money, that is, the value is small. A diamond, which can be exchanged for thousands of tons of water, has little use except to show off its beauty and sophistication. Why use large water value is small, use small things