英文關鍵字
accumulation
aluminum
animation
container
damaging
debris
degradable
discarding
disposal
dropping
ecology
equipment
factory
falling
food
garbage
industrial
items
junk
learn
leftovers
litter
machinery
material
metal
moving
organic
paper
pills
plant
plastic
pollution
process
recycle
recycling
reusable
rubbish
sorting
sustainability
sustainable
toxic
transporter
trash