英文關鍵字
evaporation
silt
rural
scene
basin
pond
agriculture
environment
landscape
exploration
manufacturing
resource
filtration
ground
sand
wash
quarry
calm
river
deposit
mining
countryside
swamp
drainage
nature
pollution
toxic
ecology
industry
pit
field
water
place
sediment
pump
sewage
treatment
plant
aerial
drone
copter
flycam
bird
eye
view