英文關鍵字
chemical
contamination
damage
danger
destruction
dirty
disaster
ecology
environment
garbage
industrial
leak
nature
pollution
river
rocks
sewage
sewer
stones
toxic
waste
water
英文關鍵字
chemical
contamination
damage
danger
destruction
dirty
disaster
ecology
environment
garbage
industrial
leak
nature
pollution
river
rocks
sewage
sewer
stones
toxic
waste
water