"The North as you know has been engaged in all sort of behavior. There have been ups and downs in that entire progress, the six-party talks.

VOA: standard.2009.04.14

For the first half of the course, we've been engaged in metaphysics,broadly speaking.

这个课程的前半部分，我们广义地探讨了形而上学。

耶鲁公开课 - 死亡课程节选

"we have said that this is a dual track effort there has been an engagement track which we have been very actively engaged in, but there is also a pressure track,"

VOA: standard.2009.11.30