newsgroup
noun [ C ] uk/ˈnjuːz.ɡruːp/ us/ˈnuːz.ɡruːp/
（网络）新闻组
a collection of messages that are shown on the internet and have been written by people interested in a particular subject
If you want to read discussions on the latest movies, subscribe to a newsgroup. 如果你想阅读关于最新电影的讨论，就订阅一个新闻组。