英文關鍵字
brick
construction
new
pave
pavement
paving
work
worker
slabs
stone
hammer
concrete
site
tile
building
causeway
cobble
cube
dust
equipment
footpath
industry
lay
machine
machinery
newly
pedestrian
position
production
put
road
roadway
set
sett
sidewalk
small
squatting
stack
steel
stoning
technician
technology
tool
walkway
block
closeup
gray
hand
labor
manual