英文關鍵字
ammo
ammunition
armed
army
attack
battle
box
bullet
business
caliber
checkpoint
closeup
construction
crime
danger
defense
dust
equipment
explosion
explosive
factory
fire
firearm
howitzer
industrial
iron
machine
machinery
manufacturing
metal
military
powder
power
production
projectile
shooting
sleeve
soldiers
steel
tank
technology
tool
war
weapons