英文關鍵字
activity
architecture
background
building
business
cable
ceiling
checking
construction
craftsman
design
electric
electricalrepair
electrician
electricity
engineer
equipment
helmet
home
housing
industrial
industry
installation
installing
interior
laborer
light
line
loft
manual
material
mounting
occupation
outdoor
power
professional
protection
repair
space
summer
technician
technology
tool
voltage
wall
white
wire
work
worker
workwear