英文關鍵字
activity
black
build
building
construct
construction
daylight
development
dig
digger
dirt
ditch
earth
equipment
excavate
excavating
excavation
excavator
grass
heavy
hydraulic
industry
large
legs
loader
machine
machinery
man
massive
mover
object
power
roots
scoop
shovel
site
soil
structure
stump
tree
trousers
vehicle
walking
work