He has created operating methods used by other surgeons and performed historic brain operations.

VOA: special.2009.09.04

You might have some people up here who are saving and other people down here who are dissaving and the production would be operating at the middle.

有人多储蓄,落在这点上,有人不储蓄,落在这点上,社会总生产力则在它们之间

耶鲁公开课 - 金融市场课程节选

But recently there's been an increase of retaliatory attacks by people on the other side, including a slightly mysterious group called the Invisible Commandos who've been operating against Gbagbo."

VOA: special.2011.04.02