He said the Earth is like a large mechanical device that will survive only if people living on it know how to operate it correctly.

VOA: special.2010.05.30

As we learned about how humans operate we could start to design machines that would help humans when they weren't functioning properly.

当我们了解了机体如何运作,就可以设计出器械,在人体某些部位功能失常时提供帮助

耶鲁公开课 - 生物医学工程探索课程节选

She had no idea about how to operate a newspaper.

VOA: special.2009.04.26

Army Colonel James Larsen is the chief of training exercises: "The most important thing that they can learn is how to operate in this environment."

VOA: standard.2010.07.21

The goal was to test whether Internet stations could be set up, how much they would cost, and how long they could operate.

VOA: special.2009.02.16

The experts expect their one-year global probe into secret detention centers to shine more light on the extensiveness of these facilities and how they operate.

VOA: standard.2009.03.21