英文關鍵字
snake
river
reptile
viper
eat
mouth
marsh
water
two
caught
frog
serpent
poisonous
portrait
slow
wide
head
swallow
survive
marshland
open
dice
motion
ears
big
bank
algae
long
fish
aquatic
crawl
tongue
along
extraction
prey
sand
grass
wildlife
brown
skin
checkered
muzzle
hunter
lake
megalocephala
swimming
outdoor