double-edged blade 意味

• 両刃の剣
  

例文

1. in order to specialize in picking , it has a double-edged blade , and it is made thick so not to break easily (some have a cross section of the blade with an almost regular triangle shape ).
   突きに特化する為に両刃の刀身を持ち、折れにくいように分厚く（中には刃の断面がほぼ正三角形のものも存在する）作られている。