英文關鍵字
air
anti
attack
barricade
breather
breathing
chemical
civil
cover
crime
criminal
danger
death
debris
decease
defence
defender
defense
defensive
devastation
dislocation
economic
filter
filtration
garbage
gas
guard
inhaler
inspirator
litter
mask
military
muzzle
poisonous
protection
respirator
rubber
rubbish
ruin
safety
self
spent
trash
ukraine
war
warfare
weapons