a phone or online service that provides advice and information about particular problems 服务热线(提供咨询和信息的电话) to set up/run a helpline 建立/运行帮助热线 an AIDS helpline 艾滋病热线 Our online helpline service is a chat service for people with questions about mental health issues. 我们的在线帮助热线服务是一项针对有心理健康问题的人的聊天服务。
Oxford Collocations DictionaryHelpline is used after these nouns:- telephone