英文關鍵字
area
arid
arroyo
bed
cho
conditions
coulee
desert
drought
drouth
dry
dryness
foothills
gulch
india
lack
landscape
low
lowwater
nala
nature
northern
period
region
river
riverbed
runoff
runofflown
scarcity
scrab
season
shortage
small
source
spell
thailand
tropical
unsaturated
wadi
wash
water
waterless
winter
zone