機器
advanced
balance
battery
board
clipart
commute
commuting
concept
conceptual
device
electric
electronic
fancy
fast
futuristic
gadget
hover
hoverboard
illustration
industrial
industry
innovation
innovative
invention
motor
object
platform
power
powered
product
recreation
recreational
red
ride
risky
roll
sleek
smart
solo
stand
step
toy
transport
transportation
twowheeled
wheel