英文關鍵字
adult
broken
bulldozer
dig
earth
earthmover
equipment
excavation
excavator
field
grass
heavy
helmet
hydraulic
industrial
industry
loader
machine
machinery
man
men
mover
moving
near
occupation
one
people
phone
power
professional
protection
scoop
shovel
shoveling
sky
smart
soil
talking
tractor
transportation
vehicle
vintage
work
worker