The second is that you do not take active steps to prevent it.

VOA: standard.2009.06.21

It's as if "thinking nothing" is not a passive activity, but an active one.

好像“脑子里一片空白“,不是一种被动行为，而是主动的似的。

耶鲁公开课 - 1945年后的美国小说课程节选

The part of their brain that could control certain behaviors is just not active yet.

控制特定行为的大脑区域,还未曾被激活

耶鲁公开课 - 心理学导论课程节选