英文關鍵字
building
drainage
electricity
line
symbol
outline
construction
excavation
columns
casting
windows
installation
process
linear
contour
background
lined
online
crane
builder
architecture
city
development
engineering
facade
object
house
project
property
step
roof
roofing
structure
housing
level
truck
monochrome
icon
motion
graphic
animation
pictogram
hd
animated
item
sign
black