Another function of the sadness and agony expressions is to enrich one's experience of what the loss has meant.

悲伤和痛苦表情的另一项功能在于充实一个人对失去所蕴含的经历。

youdao

Our efforts and devotions are closely related with the sadness and happiness at all times and we are all experiencing what one word is: responsibility.

我们的汗水和心血，时刻与患者的悲喜融在一起，都在大大书写着两个字——责任。

youdao

Have to admit, in the world of feelings, what am I to you, but will not easily open the memory door, because there is too much sadness and happiness.

不得不承认，在感情世界里，我是一个念旧的人，但不会轻易打开记忆的那扇门，因为那里有着太多的忧伤和甜蜜。

youdao

And what will happen is as a result, I experience sadness, because that is what I am thinking about, and sadness-- a painful emotion, not a positive emotion-- leads to further narrow and constrict.

结果就是，我感觉悲伤，因为我一心只想那个，悲伤-,是一种痛苦的情绪，一种消极情绪-,导致进一步的收窄缩紧。

哈佛公开课 - 幸福课课程节选