Learning about the existence of these HeLa cells was an emotional and difficult experience for the family.

VOA: special.2010.07.21

Trying to understand, not just on the cognitive level of the research, but also to experience on the visceral emotional level, what it really means to give ourselves the permission to be human.

希望你们理解，不只是在研究的认知层面上，还要在内心情感层面上去体会，准许自己为人的真正含义。

哈佛公开课 - 幸福课课程节选

Their faces show the hard work. Many visitors say it is an emotional experience.

VOA: special.2010.05.31

But Kian is not alone. Researchers say it's not uncommon for journalists who cover traumatic events - like 9/11, Haiti or the Iran elections - to experience high levels of emotional and psychological distress, even long after the immediate danger has ended.

VOA: standard.2010.07.01