英文關鍵字
architecture
berlin
building
city
clock
cloud
cloudy
famous
german
germany
pan
potsdamer
sight
sightseeing
sky
skyscraper
square
summer
sun
sunny
tourism
tourist
travel
英文關鍵字
architecture
berlin
building
city
clock
cloud
cloudy
famous
german
germany
pan
potsdamer
sight
sightseeing
sky
skyscraper
square
summer
sun
sunny
tourism
tourist
travel