英文關鍵字
abstract
alpha
background
black
business
channel
chroma
circle
continent
countries
earth
formation
geography
global
globe
isolated
key
map
mask
molding
shape
shaping
telecommunication
white
world
worldwide
英文關鍵字
abstract
alpha
background
black
business
channel
chroma
circle
continent
countries
earth
formation
geography
global
globe
isolated
key
map
mask
molding
shape
shaping
telecommunication
white
world
worldwide