英文關鍵字
agriculture
building
bush
canal
canals
channel
concrete
control
cultivated
dam
daytime
deep
ecology
environment
farm
farming
field
flow
flowing
fresh
grass
gravel
green
irrigate
irrigation
landscape
natural
nature
outback
outdoor
path
people
plant
pouring
powerful
relax
reservoir
river
rural
rushing
spray
stream
summer
supply
system
trough
water
waterfall
weir