英文關鍵字
dirt
water
pollution
damage
dirty
nature
ecology
contamination
waste
environmental
environment
industry
garbage
polluted
toxic
disaster
contaminated
pollute
nett
barrier
fence
rubbish
river
plastic
unhygienic
danger
industrial
trash
problem
destruction
surface
global
dump
recycle
coast
stain
shore
sea
petroleum
landfill
sewage
outdoor
ecological
chemical
bottles
wastewater
chemistry
conservation
polluting
debris
factory
recycling