英文關鍵字
aqua
asia
blue
bottle
coast
conservation
container
contaminated
damage
danger
dirt
dirty
drain
drink
dump
eco
ecology
environmental
garbage
glass
industrial
industry
junk
landfill
life
lifestyle
litter
natural
nature
object
picking
plastic
pollution
problem
recycled
recycling
refuse
reuse
river
rubbish
shore
sign
symbol
toxic
trash
urban
used
waste
water
wet