It is my duty to report it to the police.

把这事报告给警方是我的责任。

《牛津词典》

I felt it my duty to report it to the headmaster.

我意识到把这件事汇报给校长是我的责任。

youdao

He felt it was his duty to report the matter to the police.

他觉得有责任把这件事向警察报告。

youdao

Journalists had a duty to report on the subject that mattered, she said, just as singers had to sing and doctors had to heal.

ECONOMIST: Anna Politkovskaya

Plus, the legal duty to report sexual abuse remains unclear in many instances, including what sorts of conduct should trigger a call to authorities.

WSJ: Penn State Case Underscores How Society Deals With Sexual Assault

The danger is that, in such a climate of great apprehension and fear, the media cannot fulfill their duty to critically report on events.

CNN: ASIANOW - TIME Asia | Malaysia: Sued into Silence