Eiffel and others worked in Paris to produce a strong iron support system for the statue.

VOA: special.2009.06.29

They also, because the system worked out better for their purposes, then jumped to nine to eight, which gave them the whole tone.

另外,由于这个体系比预想的还好用,于是他们转而采用九比八的比例,从而得到了全音

耶鲁公开课 - 聆听音乐课程节选

During that time,she worked to improve the education system in Arkansas and served on the Children's Defense Fund and the Arkansas Advocates for Children and Families, an organization that she helped create.

VOA: special.2011.02.25

This system worked well until the eighteen forties.

VOA: special.2009.02.19

He called reforming the U.S. health care system the cause of his life, but also worked to influence civil rights, education and immigration.

VOA: standard.2009.08.26

"It has collapsed because of the conscious work of new generation of opposition inside which worked for two decades on building up an alternative system of information, knowing that's the most important,".

VOA: standard.2009.11.03