(1)调(侦)查(look or search into so as to learn the facts)[I，T+n，T+wh]：～to find out the cause of a railway accident 调查以找出一起铁路事故的原因;～the case/the affair/the murder/the mystery 调查那一案件/事件/谋杀案/迷案;A detective was sent to～the crime. 一名侦探被派去调查那件犯罪案。 The police were～ing how the man was murdered. 警方正在调查那个人是怎样被谋杀的。

(2)审查(find out detailed facts about)[T+n]：thoroughly～applicants before appointing them 在任命前彻底审查申请人;

(3)调查研究(try to discover by detailed study;research)[T+n]：～market for sales of a product/ways of increasing profits 为一产品的销售作市场调查/研究增加利润的方法;～the possibilities of doing sth研究做某事的可能性;Scientists～nature to learn more about it. 科学家们对自然界进行调查研究，以便更多地了解它。

→in͵vesti′gation n 调查;审查;调查研究;in′vestigative;in′vestigatory adj 调查的;审查的;调查研究的;in′vestigator n 调查者;审查者;调查研究者