英文關鍵字
and
architecture
backhoe
building
buildings
business
busy
city
concrete
construction
crane
definition
development
drilling
economy
equipment
estate
excavation
excavator
ground
heavy
high
industrial
industry
lapse
loader
machine
machinery
new
people
piling
plan
poured
real
shift
site
sorting
steel
structure
tilt
time
timelapse
truck
used
walk
worker
workers
working