Gas officials are investigating the cause of an explosion which badly damaged a house in Hampshire. [VERB noun]

煤气系统的官员正在调查一起瓦斯爆炸的起因,这起事故严重毁坏了汉普郡的一所房屋。

The two officers were being investigated by the director of public prosecutions. [VERB noun]

两名警官正在接受检察官的审查。

Police are still investigating how the accident happened. [VERB wh]

警方仍然在调查事故的起因。