英文關鍵字
person
demonstrates
operate
small
yellow
hand-cranked
solar
torch
travel
hiking
black
crank
handle
demonstration
design
ecological
emergency
equipment
hike
isolated
light
modern
object
icon
panel
plastic
portable
technology
英文關鍵字
person
demonstrates
operate
small
yellow
hand-cranked
solar
torch
travel
hiking
black
crank
handle
demonstration
design
ecological
emergency
equipment
hike
isolated
light
modern
object
icon
panel
plastic
portable
technology