He consented to a search by a detective.

他同意由侦探进行调查。

His main reading was detective stories.

他的主要读物是侦探小说。

The detective trained his gun on the side door.

侦探把枪对准边门。

A real live detective had been at the factory.

千真万确，一个侦探曾经在厂里呆过。

The detective swept the room for hair and fingerprints.

侦探在房间里搜寻头发和指纹。