英文關鍵字
architecture
steel
roof
industry
concrete
site
industrial
construction
timelapse
time
lapse
metal
iron
engineering
material
rooftop
cement
reinforcement
worker
structure
equipment
house
formwork
pattern
strong
background
crane
wooden
work
join
manpower
activity
girder
electricity
workplace
sturdy
joints
vintage
erection
connection
beam
reinforced
platform
plywood
working
floor
sand
project
silhouette