英文關鍵字
auto
automobile
bad
burn
cardboard
chemical
climate
clip
conservation
contamination
damage
dangerous
destruction
dirty
disaster
dust
ecology
environmental
factory
fire
flame
footage
garbage
grunge
hazard
illegal
industrial
junk
many
planet
plastic
pollution
poverty
power
problem
production
recycle
recycling
resource
rubbish
scrap
stack
tire
toxic
transport
trash
tyre
vehicle
waste
wheel