I/T to try to find out the facts about something in order to learn the truth about it 调查；侦察；查明，探究 | We sent a reporter to investigate the rumour. 我们派了一名记者前去调查这个传闻。 |
| All complaints from our customers are investigated quickly and efficiently. 我们的所有顾客投诉都会得到快速而有效的调查。 |
| A short time later I heard a noise outside and went to investigate. 过了一小会儿我听到外面有响声便出去查看。 |
| +what/why/whether etc The research aims to investigate why schools are not doing better. 该项调查旨在探究学校为什么不能做得更好。 |
| | a | T to try to get detailed facts and information about a person’ s behaviour or character 详细调查（某人的行为或性格） | | She was thoroughly investigated by the FBI before being offered the job. 她在得到这份工作前已被美国联邦调查局进行了彻底的调查。 | |