[guǎng dà]
（宽阔） vast; wide; extensive
vast in territory
幅员广大
There is already an extensive cooperative medical service.
合作医疗已经有了广大的发展。
the reading public
广大读者
the great majority of scientific and technical personnel
广大科技人员
combining the broad masses of people with the special organs
广大人民群众和专政机关相结合