hard-core

例句：

1. 1. The hard-core fans were so passionate about theirteam that they would travel thousands of milesto watch them play.
   这些铁杆球迷对球队的热情如此高涨，以至于他们会千里迢迢去观看比赛。
2. 2. The hard-core gamers are always looking for waysto improve their skills.
   硬核游戏玩家总是在寻找提高技能的方法。
3. 3. Thehard-core collectorshave amassed an impressivecollection of rare and valuable items.
   硬核收藏家已经积累了令人印象深刻的稀有和有价值的物品收藏。