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| Russian | English |
| военный фанатик | military fanboy (Ремедиос_П) |
| компьютерный фанатик | computer geek (ssn) |
| фанатик в своей области знаний | geek ("a person who has excessive enthusiasm for and some expertise about a specialized subject or activity" ART Vancouver) |
| фанатик своего дела | geek ("a person who has excessive enthusiasm for and some expertise about a specialized subject or activity" ART Vancouver) |