英文關鍵字
aquifer
basin
bend
brooklet
bush
course
creek
fast
fern
flood
flow
flowing
foam
foamy
forest
greenery
gush
headwater
limpid
meander
moss
mossy
mountain
musk
natural
nature
oasis
park
plants
pour
pouring
quick
rapid
rapids
rill
riverbank
riverbed
rivulet
rocks
rocky
run
runlet
runnel
slope
slosh
source
spring
stones
stony
stream
swift
torrent
torrential
trickle
vegetation
water
whitewater
woods