a parent who is married to the father or mother of a child, but who is not that child's biological (= related by birth) father or mother; a stepfather or stepmother

We offer confidential advice to step-parents on creating good relationships with their teenage stepchildren. 我们在保护隐私的前提下为继父母提供建议，帮助他们与十几岁的继子女建立良好的关系。