field of·fic·er
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