英文關鍵字
animal
annoying
around
attack
bite
brown
bull
bullcalf
calf
cattle
cow
drinking
ear
farming
feed
fly
gadfly
grass
grassland
graze
green
greenland
grizzle
hoof
horn
horsefly
husbandry
infection
insect
livestock
mammal
many
meadow
meat
mottled
muck
nature
number
parasite
pasturage
pasture
pasturing
pest
raising
skin
stock
suck
surround
tabanid
transmit