in·ves·ti·ga·tor
noun OPAL W
/ɪnˈvestɪɡeɪtə(r)/
/ɪnˈvestɪɡeɪtər/
- a person who examines a situation such as an accident or a crime to find out the truth
调查者；侦查员 - air safety investigators
飞行安全调查人员 - a private investigator (= a detective)
私人侦探
Oxford Collocations DictionaryInvestigator is used after these nouns:- arson
- police
- air safety investigators