英文關鍵字
aquatic
background
below
biological
bioresources
blue
bottom
closeup
current
day
debris
dirt
eco
ecofriendly
ecology
flow
flowing
glare
inside
landscape
lowered
moves
moving
mud
muddy
mule
natural
pond
resources
river
rocks
rocky
scenery
shallow
small
stones
stream
sun
sunny
surface
turbid
under
underwater
view
water