He used his position to enrich himself.

他利用职位之便敛财。

《牛津词典》

If Mr Hirst were managing a quoted company, he would be unable to enrich himself at the expense of his investors in quite the same way.

如果赫斯特先生经营一个上市公司，他的投资者同样这么做就不会让他自己获益。

youdao

Because it can not only help others can enrich himself, in this meaningful volunteer activity I really benefit, I also hope I can be a glorious and meaningful volunteer!

因为这样不仅可以帮助别人还可以充实自己，在这次有意义的义工活动中我的确受益匪浅，我也希望能够做一名光荣而有意义的义工！

youdao

If Mr Hirst were managing a quoted company, he would be unable to enrich himself at the expense of his investors in quite the same way.

ECONOMIST: The art market

Mr Belhaj has now written to those he is suing, saying he wants to lay to rest the misconception that he is pursuing the case to enrich himself.

BBC: Abdul Hakim Belhaj 'will settle' over Libyan rendition

Federal prosecutors alleged Kilpatrick ran a criminal enterprise through the mayor's office to enrich himself through bid rigging and extortion, and using nonprofit funds for personal gain.

CNN: Ex-Detroit Mayor Kilpatrick convicted in corruption case