investigation

/ɪnˌves.təˈɡeɪ.ʃən/

名词

（对犯罪，问题，陈述等的）调查（尤指为了发现真相）
An investigation has been under way for several days into the disappearance of a 13-year-old boy.
对一名13岁男孩失踪展开的调查已进行了好几天。