英文關鍵字
architecture
cement
concrete
construction
contractor
equipment
floor
foundation
grey
ground
hands
hoe
improvement
industrial
industry
infrastructure
job
leveling
male
man
material
mix
mixing
outdoors
pavement
paving
pour
public
renewal
repair
roadworks
service
shovel
site
smooth
street
surface
technology
trowel
urban
wet
work
worker