英文關鍵字
channel
culvert
discharge
discharging
drain
drainage
duct
eduction
effluent
engine
escape
flood
flow
flowing
flowoff
freeway
funnel
gully
highway
kennel
motorway
outflow
outlet
river
road
roadmaking
roadway
route
runnel
runoff
sink
slughorn
stream
streamflow
trap
trunk
tube
yield