英文關鍵字
amusement
background
bonn
bright
celebrate
colorful
colors
entertainment
europe
european
evening
excitement
explode
explosion
festival
fire
firework
flames
flammen
flash
flying
fun
german
germany
happiness
high
holiday
light
motion
moving
music
night
park
party
pyrotechnics
rhein
rheine
rocket
show
summer