英文關鍵字
activity
agriculture
agronomy
bulldozer
construction
country
countryside
dig
digging
dirt
drone
dump
dumper
earth
equipment
excavation
excavator
farmer
field
gravel
ground
harvesting
heavy
hydraulic
industrial
industry
lake
land
loader
machine
machinery
mechanization
metal
mine
nature
outdoors
outside
plant
site
tractor
transport
transportation
truck
wheel
work
yellow