Ethiopia has denied persistent reports that Ethiopian troops are actively engaged in Somalia's civil war.

VOA: standard.2009.08.21

They're actively engaged in the material, actually seeing the phenomena, by making measurements of real world experiments.

学生们能自主地参与到物质中，看见真切的现象，通过对真实世界实验,做出测量。

麻省理工公开课 - 媒体、教育、市场课程节选

We also have active visualizations because there's a lot of research showing that if you're actively engaged in something that solidifies the learning objectives we're taking home.

我们同时也有主动性直观化,因为很多研究结果表明,如果你积极地参与,到一些使学习目标具体化,的活动中去的话,便能真正理解它。

麻省理工公开课 - 媒体、教育、市场课程节选

"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