英文關鍵字
agriculture
bin
bio
biodegradable
clean
compost
composting
container
cuttings
decay
decompose
dung
eco
ecology
environment
farm
fertile
fertilizer
garbage
garden
grass
green
ground
heap
horticulture
household
landfill
leaf
manure
material
mulch
natural
nature
open
organic
outside
pit
plant
pollution
recycle
recycling
rotten
soil
street
tree
trench
waste