Two Australian men behind a shootout that left six dead were "obsessed" with guns in their youth
6人の死者を出した銃撃戦の背後にいる2人のオーストラリア人男性は、若い頃に銃に「夢中」だった
be obsessed with A : Aに夢中になる
shootout：銃撃戦
in someone's youth：若い頃
Wieambilla police killers were obsessed with guns, father says - BBC News
