I have it on good authority

... I read that the new director was a woman. 我获悉新董事是个女的。 I have it on good authority. 我由可靠方面获悉此事。 ...

获悉的... ... I have it on good authority. 我从可靠方面获悉此事。 She was duly apprised of the raise. 她获悉了我们的到来。 ...