英文關鍵字
evaporation
silt
rural
scene
basin
pond
agriculture
environment
landscape
exploration
wash
pit
field
area
geometric
pattern
riverbank
panorama
filtration
fertilizer
manufacturing
plant
river
extract
quarry
construction
resource
filter
sand
swamp
drainage
nature
pollution
ecology
sediment
industry
mining
sewage
treatment
drone
copter
flycam
organic