基于过去五年的销售数据，市场分析师对未来趋势做出了几个推测。

The market analyst made several ___extrapolations about future trends based on the sales data from the past five years.

科学家们基于当前气候数据进行外推，预测未来十年的气温变化。

Scientists made ___extrapolations from current climate data to predict temperature changes over the next decade.