How large? If we were willing to devote just 0.2% of global GDP (roughly $100 billion a year) to green-energy R&amp;D, I believe that we could bring about game-changing breakthroughs not just for solar power, but also for a wide variety of other alternative-energy technologies.
那么究竟要多“大量”的资金？只要投入全球年度GDP的0.2%（大概1000亿美元）投入到研究当中，相信就能取得开创性的突破，而且不仅限于太阳能领域，其他各类可替代能源技术都将从中受益。