She says youth movements have also become politically active, promising to vote after looking at a candidate's record on the environment.

VOA: standard.2009.12.08

So every time you move your arm, that area of the brain with green line starts, become active in a particular way.

因此，每当你运动手臂的时候，大脑中绿线的部分开始工作，以特定的方式活跃起来。

斯坦福公开课 - 7个颠覆你思想的演讲课程节选

There are more steps that have to happen correctly in order for that insulin to become active.

还有几个步骤,必须正确完成这些步骤后,才能生成有活性的胰岛素

耶鲁公开课 - 生物医学工程探索课程节选

There has been a strong move to change that relationship, with the students become far more active, and active participated in his or her own learning.

要改变这种教学的关系,让学生变得更积极，参与到自己的学习过程中。

麻省理工公开课 - 媒体、教育、市场课程节选