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（对某种爱好过于痴迷以至于乏味的）…痴，…呆，狂热爱好者
If you refer to someone as an anorak, you mean that they are boring because they devote too much time to a particular hobby or interest.
例句
He's such an anorak...
他真是个闷蛋。
Computer games are the ultimate anorak pursuit.
电脑游戏是电脑迷的大爱。