千せんざいいちぐう千載一遇表記・読み:千載一隅・千載一偶・せんざいいちぐう1once-in-a-lifetime (opportunity); golden (opportunity); one-in-a-million (chance)nouns which may take the genitive case particle 'no'名詞yojijukugo札へ残す語をコピー