英文關鍵字
gas
jet
burner
hot
envelope
fire
blaze
air
fly
heat
ballon
balloon
ballooning
flight
sport
transportation
inflate
huge
blow
slowmotion
leisure
basket
festival
colorful
light
aerostat
aircraft
propane
burn
aviation
inflating
equipment
burning
danger
launch
fuel
late
sky
daylight
day
nature
daytime
winter
nobody
ignition
glow