1. | （正式的）调查，侦查an official examination of the facts about a situation, crime, etc. |
a criminal/murder/police investigation 刑事╱凶案╱警方调查 | |
She is still under investigation . 她仍在接受调查。 | |
The police have completed their investigations into the accident. 警察已完成对这次事故的调查。 |
2. | ~ (into sth) 科学研究；学术研究a scientific or academic examination of the facts of a subject or problem |
an investigation into the spending habits of teenagers 对十几岁青少年的消费习惯进行的调查研究 |
