This is not the first time he has been investigated by the police for fraud.

这不是警方第一次调查他是否有欺诈行为。

《牛津词典》

When you meet someone for the first time, by the time you have stated your name or shaken hands, the other person has already formed an opinion about the kind of person you are.

当你第一次与某人见面时，当你说出你的名字或和对方握手时，对方已经对你是什么样的人形成了看法。

youdao

He stood by the piano, eyes closed, listening for the first time to his own work being played by someone else.

他站在钢琴旁，闭上眼睛，第一次听别人演奏他自己的作品。

youdao

As the service module moved away, they saw for the first time the damage done by the exploding oxygen tank.

VOA: special.2009.07.22

Milton is able in this speech to combine, I think, for the first time the two associations borne by that Latin word pastor.

弥尔顿能够在这场演说中，第一次把拉丁语牧师的两种联想结合起来。

耶鲁公开课 - 弥尔顿课程节选

Because for the first time, you're being taught by people who are smart as you are.

因为这是第一次，教你们的人和你们一样聪明。

麻省理工公开课 - 固态化学导论课程节选

In response, the company reverted to selling strawberries by the pound for the first time in over a decade.

BBC: Will British people ever think in metric?

The new kit was worn by the team for the first time last Saturday, when City beat Newcastle United 4-1 in a pre-season friendly.

BBC: Cardiff City FC: red shirt protest is called off

The painting will be seen by the public for the first time in more than 45 years when it goes on view at Sotheby's in London from 3-7 October.

BBC: Picasso painting to be auctioned