英文關鍵字
activist
barrel
catastrophe
chemical
danger
dangerous
deadly
death
deathtrap
decline
deserted
disaster
drum
environment
factory
garbage
glide
glider
harmful
hazardous
industry
metal
nasty
nature
oil
outdoors
perilous
poison
poisoning
pollution
radioactive
risky
rust
rusty
steel
substance
toxic
toxication
toxin
unsafe
venenation
waste