英文關鍵字
activity
agriculture
arable
bore
clay
country
countryside
cultivate
cultivated
cultivation
cultivator
deep
dig
dirt
drill
drilling
earth
equipment
farm
farming
field
garden
gardening
ground
hand
held
industrial
industry
land
machine
machinery
male
man
motor
mud
outdoor
people
plant
planting
plough
power
rotation
rural
soil
technology
tillage
tool
tree
work
worker