英文關鍵字
action
activity
background
backhoe
big
bucket
build
building
bulldozer
construction
dig
digger
dirt
driver
earth
engineering
equipment
excavation
excavator
foundation
ground
heavy
hole
hydraulic
industrial
industry
loader
machine
machinery
mechanical
mine
mover
open
outdoors
power
quarry
road
sand
scoop
shovel
site
sky
soil
tractor
trench
trenching
vehicle
wheel
work
yellow