英文關鍵字
biodegradable
chemicals
clean
composition
eco
ecological
ecology
electricity
energy
engineering
environment
environmental
environmentally
factory
friendly
from
fungicides
garbage
generating
generation
green
hazardous
heat
herbicides
inside
management
medical
municipal
nature
pesticide
plant
problems
process
processing
protection
recyclable
recycle
solid
source
toxic
transformation
trash
treatment
value
waste