The abuser may have threatened your friend, which is why your friend hasn't told anybody about the abuse.

你的朋友没有透露自身遭受虐待的原因很有可能是他们受到了施虐者的恐吓。

youdao

The usual impulse would be to protect the most vulnerable. But in this case, it seems, everyone needs concern, even the abuser.

人们通常会去保护最脆弱的人群。但是，在这个案例中，似乎每个人都需要关心，即使是施虐者。

youdao

Domestic violence often follows a pattern in which an abuser seeks to control every aspect of a victim's life.

家庭暴力经常遵循这样一种模式：虐待者谋求控制受害者生活中的方方面面。

youdao

Barnardo's said her abuser was arrested and Susan was put in touch with the charity.

BBC: UK children 'trafficked for sex'

The defectors told the newspaper that Miscavige was a serial abuser of his staff.

NEWYORKER: The Apostate

The abuser, a beloved member of the community, had his or her supporters and detractors.

FORBES: Caring For Survivors of Boyhood Sexual Abuse Is The Next Step In The Penn State Case