first-hand の英語での意味
first-handˌfirst-ˈhand (also first‧hand) /ˌfɜːstˈhænd $ ˌfɜːrst-/ adjective [only before noun] 
すべての翻訳を見る first-hand experience/knowledge/account etc experience etc that has been learned or gained by doing something yourself or by talking to someone yourself自ら経験したり、直接本人に話を聞いたりすることで得た（経験など）: 
journalists with first-hand experience of working in war zones戦場での勤務経験を直接持つジャーナリスト—first-hand adverb: experience gained first-hand直接得た経験 → (at) first hand at first1(8)
すべての翻訳を見る first-hand experience/knowledge/account etc experience etc that has been learned or gained by doing something yourself or by talking to someone yourself自ら経験したり、直接本人に話を聞いたりすることで得た（経験など）: journalists with first-hand experience of working in war zones戦場での勤務経験を直接持つジャーナリスト—first-hand adverb: experience gained first-hand直接得た経験 → (at) first hand at first1(8)