field officer
noun /ˈfiːld ɒfɪsə(r)/
/ˈfiːld ɑːfɪsər/
- a person in a company or other organization whose job involves practical work in a particular area or region
(公司等的)派驻地区工作人员,地区工作人员 - an officer of high rank in the army (= a major, lieutenant colonel or colonel)
陆军校官