Everything is interconnected on the higher level on a spiral-- in other words will lead to deep understanding and hopefully assimilation of the material.

所有内容在一个更高的水平上呈螺旋状互相联系-,换言之，会带来深刻的理解和我所希望的对材料的吸收。

哈佛公开课 - 幸福课课程节选

So it's the amount of energy, usable energy for the body that a food provides.

所以卡路里是能量的总额,食物所提供的被人体吸收的能量

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选