LAST UPDATED: 1/11/2021 ☆
Oxford Advanced Learner’s Dictionary
helpline /ˈhelplaɪn/
noun
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
an AIDS helpline
Our online helpline service is a chat service for people with questions about mental health issues.
hotline /ˈhɒtlaɪn/
noun
1. a special phone line that people can use in order to get information or to talk about something
电话咨询服务专线；热线
a 24-hour confidential hotline
An emergency hotline has been set up for the relatives of those involved in the disaster.
Extra Examples A telephone hotline has been set up to give information about the changed train services. Call our 24-hour hotline to find out if you have won a prize. The company has an information hotline that customers can call if they are worried about products.
2. a direct phone line between the heads of government in different countries
（各国政府首脑之间通话的）热线
the hotline to the White House
Word List
particular
/pəˈtɪkjələ(r)/
adjective
[only before noun] used to emphasize that you are referring to one individual person, thing or type of thing and not others
专指的，特指的（与泛指相对）