英文關鍵字
activity
angle
building
business
caterpillar
clay
construction
contruction
definition
development
dig
digger
dirt
earth
equipment
excavate
excavation
excavator
gear
gravel
ground
hdv
heap
heavy
hill
horizon
hydraulic
land
large
machine
machinery
metal
mover
object
outdoors
power
road
rubble
sand
scoop
single
site
stack
static
sun
technology
view
work
working