a specially trained police officer who supports the family of someone who has been murdered or killed in a road accident, etc.

His family are absolutely devastated by what has happened and they are being supported by specially trained family liaison officers. 他的家人因为所发生的事情极度悲伤，受过专门训练的家庭联络官为他们提供了帮助。

Family liaison officers were looking after her parents who had confirmed that the jewellery was similar to that worn by their daughter. 家庭联络官正在安慰她的父母，他们证实这些珠宝与他们女儿佩戴的珠宝很相似。

a specially trained person who supports the family of a child who is having problems at school, especially to help with problems in the family that affect the child's learning

The family liaison officer works in partnership with families to help tackle underachievement. 家庭联络官与学生家庭合作，帮助解决学习成绩不佳的问题。