英文關鍵字
architecture
builder
building
city
construction
craftsman
engineer
engineering
equipment
escalator
eyewear
factory
fire
flash
grinding
heavy
house
industrial
industry
iron
job
ladder
light
male
manufacturing
mask
metal
metalwork
people
production
professional
protection
protective
safety
site
siten
skill
smoke
spark
sparks
steel
structure
technical
technology
tool
torch
weld
welder
welding
work
worker
working
workshop