英文關鍵字
build
building
cement
closeup
compacting
concrete
construction
contractor
crew
freeway
gray
ground
highway
industrial
industry
infrastructure
labour
level
leveling
liquid
machine
manual
material
mix
mixing
mortar
pouring
professional
pump
road
runway
screed
shovel
site
smooth
smoothing
structure
surface
technology
texture
tool
trowel
wet
work
workers