英文關鍵字
agricultural
blows
breadseed
broken
change
climate
cracked
cracks
czech
danger
death
degradation
desert
desertification
desiccation
dirty
drought
dry
earth
ecology
environment
europe
field
flowering
fodder
grains
ground
land
leaf
leaves
nature
opium
papaver
papaveraceae
plant
poppy
problem
republic
rough
seeds
set
soil
somniferum
summer
surface
wind