field in which one acts unchallenged 独壇場 [どくだんじょう] /(n) field in which one acts unchallenged/unrivaled sphere of activity (unrivalled)/one's monopoly/ ------- 独擅場 [どくせんじょう] /(n) field in which one acts unchallenged/unrivaled sphere of activity (unrivalled)/one's monopoly/ |