英文關鍵字
abstract
art
background
boulder
brown
clear
close
cold
color
creek
dry
flow
flowing
fluid
foliage
gravel
gray
leaf
material
mineral
motion
natural
nature
pattern
pebble
pebbles
rapid
reflection
ripple
ripples
river
riverbed
rock
running
smooth
spring
stone
stream
summer
sun
surface
texture
textured
transparent
water
waves
wet
white
yellow