英文關鍵字
animal
ascent
bank
brook
calf
cow
creek
crick
dirt
field
fork
gradient
grass
gravel
handheld
hills
liquid
mountainous
panning
reed
ripple
river
rock
shore
shrub
slope
spring
stream
water
weeds
英文關鍵字
animal
ascent
bank
brook
calf
cow
creek
crick
dirt
field
fork
gradient
grass
gravel
handheld
hills
liquid
mountainous
panning
reed
ripple
river
rock
shore
shrub
slope
spring
stream
water
weeds