And just to give you a sense of reference, the U.N. actually estimate that for half that amount, for about 75 billion dollars a year, we could solve all major basic problems in the world.
让我给你一些参考资料， 根据联合国的估计，我们只需一半的价钱， 即每年大概七百五十亿美元， 便可以解决世界上所有重大基本问题。