英文關鍵字
algae
animal
chordata
colubridae
colubrids
constrictor
day
diapsida
ecology
ecosystem
extraction
eyes
fish
foliage
good
green
indeed
indochina
lepidosauria
looking
mekong
motion
natricinae
outdoors
poison
poisonous
predator
quality
reptile
river
sand
serpentes
snake
swimming
tragic
venom
venomous
vertebrata
water
yellow