"If Madoff acted alone, it would all end right now. There is no way this kind of operation could have taken place all by himself."

VOA: standard.2009.03.12

One way to draw sort of a schematic diagram of the operation of the human body where it shows separated organ systems and tries to show them in context.

用这种图示的方法,示意人类身体的运作方法,图中单独表示出器官系统,并试图展示它们之间的联系

耶鲁公开课 - 生物医学工程探索课程节选

We'll talk about how your normal valves function inside your heart and how your heart couldn't work in the way that it did if it didn't have valves that were doing a very complex operation many many times a day.

我们会讨论,正常的瓣膜在心脏中如何工作,以及没有这个,每天不停完成很多复杂任务的心脏瓣膜,心脏为什么,就不能正常工作了

耶鲁公开课 - 生物医学工程探索课程节选

Search and rescue teams have arrived from several countries and more are on the way, and the United States has embarked on a massive relief operation.

VOA: standard.2010.01.14

"But the problem on the relief well is not simply drilling all the way down, it is also connecting it up, and that is a delicate operation that could take some time."

VOA: standard.2010.07.16