For the past three centuries, humans’ effects on the global environment have escalated. Most importantly, our emissions of carbon dioxide may cause global climate patterns to depart significantly from their natural course for many millennia to come.
在过去的三百年里，人类对全球环境的影响越来越大。尤其是我们排放的二氧化碳，这导致全球气候的改变，如果要是自然变化的话，可以要几万年时间才可能完成。