英文關鍵字
blink
bulb
color
current
device
diod
ecology
economical
economy
efficient
electric
energyconserving
flash
flashlight
glass
hang
illumination
indoor
inside
keychain
lamp
lay
led
light
little
metal
miniature
motion
nano
nopeople
one
power
ring
round
saving
shape
single
small
sway
toy
trinket