英文關鍵字
concept
dirty
disaster
discarded
dumping
earth
ecological
ecology
ecosystem
environment
environmental
garbage
human
industrial
industry
natural
nature
pollute
polluted
pond
problem
refuse
river
trash
urban
water
英文關鍵字
concept
dirty
disaster
discarded
dumping
earth
ecological
ecology
ecosystem
environment
environmental
garbage
human
industrial
industry
natural
nature
pollute
polluted
pond
problem
refuse
river
trash
urban
water