That was the song "Revolving Doors."

VOA: special.2011.02.25

The slave trade revolving around tobacco or cotton or coffee or sugar would tend to mix slaves and laborers from different language backgrounds, in part deliberately, so as to avoid the possibility of revolt.

为了获得烟草,棉花,咖啡,或糖块的奴隶交易,会将来自不同语言背景的奴隶,和劳动者们混在一起,这也在某种程度上,谨慎地避免了可能的造反

耶鲁公开课 - 心理学导论课程节选

Much of the conversation this week is revolving around putting the world's economy back on a sustainable track.

VOA: standard.2010.01.28