英文關鍵字
agricultural
altissima
background
beet
beta
broken
change
climate
cracked
cracks
czech
danger
death
degradation
desert
desertification
desiccation
dirt
dirty
drought
dry
earth
ecology
environment
europe
field
fodder
geology
ground
land
leaf
nature
plant
problem
republic
rough
set
soil
sugar
summer
surface
vulgaris