investigate 
英 [ɪnˈvɛstɪˌɡeɪt]  美 [ɪnˈvɛstəˌgeɪt] 
v. 审查；调查，研究

例句：
A senior official was sent from London to investigate the claims. 

从伦敦派出了一名高级官员去调查索赔要求。

Gas officials are investigating the cause of the explosion. 

天然气公司的官员正在调查此次爆炸的原因。

They are investigating how the accident happened. 

他们正在调查事故是如何发生的。

one of the 40 FBI agents assigned to investigate the crime 

派去调查此罪行的40位联邦调查局特工之一

The two officers were being investigated by the director of public prosecutions. 

这两位官员正在接受检察官的调查。