use firearms 意味

• 火器｛かき｝を用いる
  

例文

1. yeah , only this time the cause of death is a double tap through the heart and our perp doesn't use firearms .
   アア 今回は死因だ 心臓を狙って2発だ -
2. castles were also designed to allow defenders to use firearms to fire on attackers , so there was no longer the need for the depth of moats to be restricted to the length of a spear .
   また守城側も火縄銃で攻城側の兵を攻撃できるようになったため、堀の深さをあえて槍の届く程度にとどめる必要がなくなった。