英文關鍵字
wetland
bank
river
water
area
filtration
evaporation
silt
rural
scene
basin
pond
agriculture
environment
landscape
exploration
manufacturing
field
ground
riverbank
aerial
view
fertilizer
production
site
resource
filter
swamp
drainage
nature
pollution
toxic
ecology
sediment
industry
mining
pit
place
pump
sewage
treatment
plant
drone
copter
flycam