英文關鍵字
agriculture
agronomy
arable
bedrock
bent
brim
cornfield
crop
cultivation
dirt
earth
economy
farm
farming
fertile
field
formation
furrow
girder
ground
harvest
husbandry
land
margin
motion
ploughing
plowing
priming
ranch
rural
season
slow
square
till
tillage
tilth
turn
turning