Well there are interesting evolutionary reasons that we'll talk about in the class for that.

之后我们会讲到,这背后非常有趣的革命性的原因

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

All these things are very important players, so we'll talk about this and discuss what sort of things are shaping your diet, but also the world's diet and the reasons behind them.

这些因素都非常的重要,我们会对此进行讨论,并讨论是什么塑造了我们的饮食习惯,以及世界各地人们的饮食习惯,及其背后的原因

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

In kinematics, you don't ask the reason behind anything.

在运动学中,我们不关心现象背后的原因

耶鲁公开课 - 基础物理课程节选