Yet, when we take a step back, and look over the span of history, at what we might call the petroleum interval, it's a short period in history where we've discovered this extraordinary material, and then based a whole way of life around it.
如果我们退一步看， 整个人类历史， 我们所谓的石油时代， 仅仅是历史的一小段， 从我们发现这个特别的材料， 到完全依赖石油。