英文關鍵字
aquatic
background
botany
brook
ditch
duck
duckweed
environment
green
growth
leaf
lemnoideae
natural
nature
plant
pond
stream
surface
texture
video
water
weed
英文關鍵字
aquatic
background
botany
brook
ditch
duck
duckweed
environment
green
growth
leaf
lemnoideae
natural
nature
plant
pond
stream
surface
texture
video
water
weed