英文關鍵字
alpha
atmosphere
background
built
bulb
channel
concept
conservation
consumption
ecology
electricity
energy
environment
environmental
future
idea
innovation
invention
lamp
led
light
lightbulb
loop
motion
natural
old
power
protect
recycle
renewable
resource
retro
saving
seamless
slow
style
symbol
technological
technology
tint
vintage
warm
yellow