英文關鍵字
car
cement
concrete
construction
industrial
machine
mixer
transport
truck
work
big
builder
contractor
equipment
heavy
lorry
mixing
transportation
white
vehicle
auto
build
business
deliver
foundation
mix
road
rotates
sand
project
site
structure
engineering
industry
machinery
pour
automobile
blue
builders
dirt
earth
excess
fouraxle
glue
gray
ground
grout
liquid
material