She says the security forces should be more proactive in monitoring what she calls high-risk suspects.

VOA: standard.2010.03.24

But you really have to be proactive and find them.

但你必须主动找到它们。

洛杉矶和旧金山的差异 - SpeakingMax英语口语达人

Sometimes it's remarkable for all of us if we try to be very prepared-mind-oriented, very proactive around where the most interesting opportunities.

有的时侯,如果我们能时刻做好准备，积极地去寻找那些很有吸引力的机会,那将会是一件很了不起的事。

斯坦福公开课 - 扎克伯格谈Facebook创业过程课程节选