translation.en: And in our studies, what we’ve been able to do is to use very expensive, high-tech, state-of-the-art measures to prove how powerful these very simple and low-tech and low-cost -- and in many ways, ancient -- interventions, can be.
translation.zh: 在我们的研究里，我们已做到的是， 用非常昂贵的，高科技的，先进的手段 来证明这些简单的、低科技、低成本的， 以及——在很多方面来说——古代的发明，是多么的强大。