She's a useful person to know.

她是个应该结交的有用的人。

youdao

In the future be a useful person to the country.

将来做一个对国家有用的人。

youdao

And she hoped he would be a useful person in the future.

她希望他在未来将是一个有用的人。

youdao

"What we've proven to be useful and what does work is having a person in a stressed state, and then reducing that stress because it's that contrast is what motivates a person to cooperate, what motivates a person to start talking.

VOA: standard.2009.04.17

But there's some things that that person can do and they're definitely useful in an organization and can do a lot of stuff.

这样的人才,知道该怎么做事,这公司来说十分重要，他们很能干。

斯坦福公开课 - 扎克伯格谈Facebook创业过程课程节选

Hasseen is also accused of possessing a document or record containing information that may have been useful to a person preparing to perform a terrorism act on 3 July.

BBC: EDL: Terror suspects deny attack plan

It has also been alleged that he collected information likely to be useful to a person committing or preparing an act of terrorism.

BBC: NEWS | UK | Scotland | Tayside and Central | Terror accused excused appearance

Mr Lavery, 27, from the Ballymoat Road in Model Farm estate, is accused of collecting information likely to be useful to a person committing or preparing an act of terrorism.

BBC: Ballykinlar Army base