And So, Descartes used the method of doubt to say there's something really different about having a body that's always uncertain, from having a mind.

因此,笛卡尔运用怀疑方法得出,与拥有不可确定的身体不同,拥有心理是肯定的

耶鲁公开课 - 心理学导论课程节选

And what they did was they used a sucking method.

它们应用了一种吮吸的方法

耶鲁公开课 - 心理学导论课程节选