英文關鍵字
business
camera
closeup
cool
detail
drill
drop
engineering
equipment
factory
flow
gear
grease
heavy
industrial
industry
iron
lathe
liquid
lubricant
machine
machinery
macro
manufacture
mechanical
metal
metallic
motion
obsolete
old
part
production
shiny
shop
slow
steel
stream
technology
tool
well
work
workshop
yellow