英文關鍵字
abstract
arid
backdrop
background
crack
cracked
desert
detail
dirt
drought
dry
dune
earth
empty
environment
environmental
erosion
forest
formation
geology
ground
humus
land
landscape
landslide
mountain
organic
quarry
relief
rock
rocky
rough
sand
sandstone
sandy
silica
soil
structure
surface
texture
textured
tree