機器
aggregate
alternator
battery charger
bicycle
bicycle dynamo
bicycling
bike
biking
charger
component
cycle
dynamo
ecology
electric
electrical
electricity
electricity generator
energy
engine
equipment
exercise
exterior
generation
generator
grey
light
lighting system
metal
old
outdoor
outside
power
power generator
power supply
red
renewable
retro
steel
street
summer
technology
tire
transformer
transport
transportation
vertical
vintage
voltage
wheel