英文關鍵字
accommodation
activity
aerodynamic
aerospace
airscrew
apartment
backdrop
boy
building
child
childhood
children
control
controlled
disc
engine
equipment
exhibition
flies
flying
fun
helicopter
highrise
joystick
leisure
mobility
model
object
outdoors
piloting
playing
power
propeller
ready
residental
rotor
runs
season
single
small
speed
sport
spring
staring
sunny
technology
throw
toy