英文關鍵字
aquatic
background
below
bioresources
blue
bottom
covered
current
day
debris
dirt
eco
ecofriendly
ecology
flow
flowing
green
inside
landscape
lowered
moves
mud
muddy
mule
natural
pond
river
rocky
scenery
shallow
small
species
stones
stream
summer
sun
sunny
surface
trash
turbid
under
underwater
view
water