他对自己和那位女演员的关系直言不讳。
He was very frank about his relationship with the actress.

坦诚相告，我认你的儿子不大可能通过考试。
To be frank with you, I think your son has little chance of passing the exam.

这本杂志面向青少年市场，对性和恋爱问题作出坦率的忠告。

The magazine, which gives frank advice about sex and romance, is aimed at the teenage market.