The conventional wisdom is, however, wrong; worse, it is dangerous, for we have all seen how quickly it can take hold, distort reality, and then harden like cement. For example, four years ago, when I came to office, only a handful of global leaders knew enough even to talk about climate change – the defining challenge of our times, whose effects we see every day, all around us.
但多数人的看法不仅错误，而且危险，因为我们都知道错误的看法能快速生根，扭曲事实，而后像水泥一样固化。 比方说四年前，我刚刚就任的时候，多数全球领导人谈起气候变化这个时代议题时都知之甚少，但现在气候变化的影响已经深入人心、随处可见。 今天，气候变化已经成为全球首要议题。