英文關鍵字
air
background
blue
clean
close
concept
construction
countryside
eco
ecology
economy
efficient
electric
electricity
electronic
energetic
energy
environment
environmental
equipment
farm
garden
generation
generator
green
happy
home
house
industrial
industry
joy
looking
money
nature
outdoor
plant
play
power
propeller
renewable
rudder
save
savings
small
smile
solar
technology
toy
turbine
vehicle
watt
wind
windmill
young