专门人员

specialist / specialized staff

specialist / specialized / customized

for a particular person, occasion, purpose / focused on one thing / special / expert / particular (to sth) / concentrated / specialized

variant of 專|专[zhuan1]

gate / door / CL:扇[shan4] / gateway / doorway / CL:個|个[ge4] / opening / valve / switch / way to do something / knack / family / house / (religious) sect / school (of thought) / class / category / phylum or division (taxonomy) / classifier for large guns / classifier for lessons, subjects, branches of technology / (suffix) -gate (i.e. scandal; derived from Watergate)

disciple / follower / hanger-on (at an aristocrat's home)

person; people / CL:個|个[ge4],位[wei4]

staff / crew / personnel / CL:個|个[ge4]

person / employee / member