[] a service such as transport or health care that a government or an official organization provides for people in general in a particular society 公共服务◆to improve public services in the area 改善这个地区的公共服务
[] the government and government departments 政府；政府部门◆to work in public service 在政府机关工作◆public service workers 公务人员
[, ]something that is done to help people rather than to make a profit 公益事业（或服务）◆to perform a public service 从事一项公益服务