英文關鍵字
background
banner
berlin
black
blowing
blue
building
business
clear
color
concept
country
culture
element
europe
european
federal
flag
flagpole
flagstaff
flutter
german
germany
government
green
international
nation
national
nationality
nobody
outdoor
patriotic
patriotism
peace
political
politics
red
republic
sign
sky
state
symbol
tree
two
union
waving
wind
world
yellow