英文關鍵字
industrial
site
builder
work
business
worker
construction
industry
safety
workers
workplace
manufacturing
male
factory
equipment
urban
construct
engineer
city
engineering
weld
welder
welding
technology
professional
multistory
highrise
architect
masonry
working
build
employment
development
steel
job
building
builders
hardhat
arc
warehouse
fabricate
commercial
craftsman
architecture
torch
contractor
frame