agriculture
animal
beef
bell
biogas
bovine
breed
breeding
cattle
countryside
cow
day
domestic
dung
ecological
energy
environment
excrement
farm
female
fertilizer
grassland
green
head
herbivore
horned
horns
husbandry
industry
livestock
mammal
manure
milk
natural
nose
nostrils
organic
pastoral
pasture
pats
peaceful
portrait
renewable
residue
resting
ruminant
rural
summer
tranquil
waste
定額
Adult female cow resting on the grass. Ecological livestock breeding. Cow dung, a natural ecological fertilizer, a renewable and stable source of green organic energy, used to produce biogas.の素材 [FY31054033980]
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