She collected the work of the great ancient painters, but also worked hard to support modern artists beginning their careers.

VOA: special.2009.01.11

In fact, if the other person is working hard, or is cutting back on their carbon emissions, you have every bit more incentive to not work hard or to keep high carbon emissions yourself.

实际上,如果其他人正在努力工作,或者正在尽量减少碳排量,你总会有想偷懒的动机,或者总是继续大量排碳

耶鲁公开课 - 博弈论课程节选

But first,we talk to some Americans who have retired from their professional lives but still work hard to help others.

VOA: special.2010.07.16

"Today,in the face of violence from those who would only destroy, Iraqis took a step forward in the hard work of building up their country.

VOA: special.2010.03.13

Their faces show the hard work. Many visitors say it is an emotional experience.

VOA: special.2010.05.31

Yet the Mormons continued to work hard to make their settlement a success.

VOA: special.2009.06.04

The Chinese workers became known for their skill and hard work.

VOA: special.2010.03.03

They work hard. They practice their singing in Mr.Cockrell's classes.

VOA: special.2011.04.01

"To restore a more stable financial and economic environment, in which opportunity can again flourish and in which Americans' hard work and creativity can receive their proper rewards,".

VOA: standard.2009.08.25

And they are extremely proud of what they're doing. But all of us volunteers,workforce, everybody involved has to keep their eye on the ball, work hard right to the end.

VOA: standard.2010.02.21