in·ves·ti·ga·tion/ɪnˏvɛstə`geʃən; ɪnˌvestɪˈɡeɪʃən/ n [C,U] an official attempt to find out about something, especially a crime or accident 调查，审查〔尤指犯罪事件或事故〕: + into an investigation into police corruption 对警察贪污腐败的调查 under investigation (=being investigated) 在调查中: Safety procedures at the airport are currently under investigation. 机场的安全措施正在接受审查。