“志愿者”用英语怎么说？

志愿者记录下他们一周所吃的所有食物。The volunteers kept a record of everything they ate for a week.找个志愿者编这个计算机程序不成问题。Finding a volunteer to write the computer program isn't a problem.该中心95%以上的工作人员是志愿者.Volunteers constitute more than ...