particularly active or enthusiastic 尤为积极的；狂热的◆Early Xbox sales were mainly to hard-core gamers. 早期的 Xbox 游戏主机主要面向狂热的游戏玩家。
involving people who are unlikely to change their opinions or behaviour 顽固的；固执的◆the hard-core unemployed (= who have had no work for a long time and are not very likely to find a job) 长期失业者