/ɪnˈvestɪgeɪt ||; ɪnˈvɛstəˌget/verb [I,T] to try to find out all the facts about sth 调查;研究: A murder was reported and the police were sent to investigate.凶杀案发生后,警察被派去调查。A group of experts are investigating the cause of the crash.专家小组正在调查坠机原因。 ➔investigatornoun [C]