英文關鍵字
action
activity
backhoe
borrow
bucket
build
bulldozer
construct
construction
contractor
dig
digger
dirt
earth
earthmover
engineering
equipment
excavate
excavating
excavation
excavator
gold
ground
heavy
horizontal
hydraulic
industrial
industry
loader
machine
machinery
metal
mine
mover
night
operator
outdoor
overtime
pavement
pipes
power
road
sand
scoop
shovel
site
tool
tractor
transport
transportation
work
worker