Though she never ran for office, she spent her life energetically working to improve the lives of people with developmental problems.

VOA: special.2009.08.23

He spent the rest of his long life working on scientific and political problems.

他把他剩下的时光用来,研究科学和政治问题。

耶鲁公开课 - 政治哲学导论课程节选

But the guy working, the one on the track off to the side, he didn't choose to sacrifice his life any more than the fat man did, did he?

但在侧轨上施工的那名工人，他并不比那个胖子，更愿意牺牲自我，不是吗？

耶鲁公开课 - 公正课程节选

He says the agency currently has twenty-eight projects working in astrobiology, or the study of life in outer space.

VOA: special.2010.05.25

At the same time, researchers continue working to help patients have a better quality of life.

VOA: special.2010.06.15

Marchers from all walks of life were united in their belief that the current global economic system was simply not working and change was urgently needed.

VOA: standard.2009.03.28

"This means as government working with our social partners, we must strive to improve the quality of life of all our people by providing shelter, basic amenities, education and security."

VOA: standard.2010.03.21