英文關鍵字
animal
are
asian
attract
bag
breeding
calefaction
can
contamination
dead
eating
ecosystem
ecosystems
engage
enlist
entice
falling
feed
fish
fisherman
fishery
fishing
floating
floats
flock
food
fresh
freshwater
fun
impoundment
killn
lanka
long
microalgae
microscopic
neuston
nile
niloticus
nourish
oreochromis
overgrown
periphyton
peter
pisces
pisciculture
plastic
polluted
pollution
pond
recruit
river
riverside
saint
shore
sri
stream
this
tilapia
time
tropical
vegetation
water
winter