Yet until recently the worst forecasts were almost exclusively linked to direct human activity, such as clear-cutting and burning for pastures or farms.
出自-2013年6月阅读原文
I am responsible for financial development programs in many parts of the world, so forecasting long range trends and making predictions on the basis of present evidence is what I do.
出自-2013年6月听力原文
In the 1990s, many economists began to look at chaos theory as a way of providing models for forecasting
出自-2013年6月听力原文