So the Institute of Medicine proposed that residents be required to get five continuous hours of rest for every sixteen hours on duty.

VOA: special.2010.07.13

they can be found to have breached their fiduciary duty, I'm on the hedge fund side and against the sort of company management side.

他们可以被发现存在渎职行为，我站在对冲基金的阵营上并且反对,公司管理的主张。

耶鲁公开课 - 金融市场课程节选

But many cultures focus on an ethics of community, bringing together duty, status, hierarchy, and interdependence.

但很多文化则重于集体道德，强调义务，地位，等级制度，互相依赖。

耶鲁公开课 - 心理学导论课程节选

In another famous illustration, "The Army of the Potomac - A Sharp-Shooter on Picket Duty."

VOA: special.2010.07.25

There is one military aid on duty every second of every day including overnight.

所以每天每秒钟,包括整一个晚上,都有一个军事助理值班。

普林斯顿公开课 - 国际座谈会课程节选

Each day,thousands of Americans are called to serve on jury duty.

VOA: special.2009.08.31

Speaking at the vigil, New York City Mayor Michael Bloomberg said it is the "sacred duty" of New Yorkers to carry on the memories of those lost.

VOA: standard.2009.09.11

U.S.Army Sergeant Jeremy Tormala, on his second tour of duty in Iraq, thought the elections gave a good indication that Iraqi forces will be up to the task.

VOA: standard.2010.03.08