なんねんかん 何年間も LinksSentence search for 何年間もSentence search for なんねんかんもKanji details for 何, 年 and 間Edit in JMdict Expressions (phrases, clauses, etc.)1. many yearsそのせいじか政治家はなんねんかん何年間も、まやく麻薬のみつばいばい密売買をしてきた。That politician has been trafficking in drugs for years. Discussions Log in to talk about this word.