英文關鍵字
blending
bucket
build
builder
cement
cementmixer
closeup
concrete
construction
contractor
craftsman
drill
electrical
equipment
gray
hand
house
indoors
industrial
industry
instrument
knead
labor
machine
machinery
man
material
metal
mill
mix
mixer
mixing
mortar
motor
preparation
professional
repair
rotate
site
textured
tool
wall
wet
work
worker