One thing that does matter to our base level of wellbeing which is external circumstance is democracy versus oppression.

对基础幸福水平很重要的一样东西,它是一个外在因素，那就是民主和压迫。

哈佛公开课 - 幸福课课程节选

There is a lot of research showing how difficult it is to change happiness based on external factors.

很多研究表明,基于外在因素改变快乐很难。

哈佛公开课 - 幸福课课程节选

in which we suddenly find ourselves, without meaning to and without being simply victims of any sort of cultural tyranny, standing in front of something, clasping our hands, tilting our head and feeling somehow or another different from the way we feel when we typically look at things.

我们会突然发现，自己毫无理由地,不受任何外在因素控制地，站在一样东西面前，拼命地鼓掌，歪着头品味，感觉到此时此刻的感受,与平时不同。

耶鲁公开课 - 文学理论导论课程节选

internal factors versus external factors.

内在因素和外在因素。

哈佛公开课 - 幸福课课程节选