英文關鍵字
angle
bright
closeup
construction
craftsman
cut
cutter
cutting
electric
electrical
engineer
engineering
equipment
factory
flash
flying
foreman
gloves
grinder
industrial
industry
job
light
male
man
manufacture
manufacturing
mechanical
metal
metallurgy
metalwork
metalworking
motion
production
professional
saw
spark
sparks
steel
technical
technology
tool
tools
welder
welding
work
worker
working