英文關鍵字
silver
ore
mineral
rock
mining
industry
quartz
fortune
hunt
travel
destination
andes
mountains
industrial
refine
pure
potosi
stone
metallic
precious
metal
greed
value
gray
aggregate
shiny
luxury
material
grey
expensive
rich
wealth
tourism
digger
success
background
heavy
abstract
investment
texture
nature
surface
reflection
natural
brilliant
excavation
geology
exploitation
bolivia
shape
small
processed
generate
south
america