英文關鍵字
worker
construction
site
red
cable
cover
pipe
steel
laying
industrial
trench
work
ground
connection
earth
equipment
industry
wire
large
engineering
professional
heavy
installation
machine
pipeline
tube
build
people
technology
line
英文關鍵字
worker
construction
site
red
cable
cover
pipe
steel
laying
industrial
trench
work
ground
connection
earth
equipment
industry
wire
large
engineering
professional
heavy
installation
machine
pipeline
tube
build
people
technology
line