英文關鍵字
adult
alternative
bulb
ceiling
cfl
change
close
closeup
compact
concept
conserve
ecofriendly
ecology
economical
efficient
electric
energy
environmental
female
fixture
fluorescent
hand
home
illumination
improvement
incandescent
install
lamp
light
lightbulb
new
old
person
power
putting
replace
screwing
smarter
spiral
switching
technology
twist
white