英文關鍵字
agriculture
ancient
animal
area
big
bison
breeding
brown
buffalo
bull
care
cattle
cow
domestication
endangered
europe
farm
fence
field
foal
forest
freedom
grass
grazes
green
livestock
mammal
meadow
natural
nature
outdoor
park
pasture
population
power
protected
protection
rebirth
recovery
reservation
reserve
rural
species
standing
summer
travel
walking
wild
wilderness
wildlife
wood