Leaving only a handful that survived. Flight Eleven and One Seventy-Five with the illegal medications that overdosed our population, led us to receive a leave of absence for an unnecessary vacation and we became addicts.

VOA: special.2009.04.17

While he points out that in our culture we feel very uncomfortable with the absence of words, with the absence of sound or noise.

他指出，在我们文化中沉默，让人不适。

哈佛公开课 - 幸福课课程节选

Okay? So those are the basic note values normally with a duple division but we can superimpose triple by using a dot and the absence of sound.

清楚了吗,这些就是基本的音符值,一般是双倍形式分配,但我们可以把它添加为三倍形式的,通过加上附点当然还有休止符

耶鲁公开课 - 聆听音乐课程节选

The reason is because there are two different approaches to deal with illness: one,the positive psychological approach is that the illness is the absence of health, as opposed to health is the absence of illness.

究其原因，是因为有两种不同的方法,对付疾病，一是积极心理学方法,它指的是，疾病相当于不健康，相对地，健康等于没疾病。

哈佛公开课 - 幸福课课程节选