英文關鍵字
are
business
car
close
concept
engine
equipment
factory
gearbox
hand
holding
machinery
mining
parts
people
plant
repairs
service
sharpening
sparks
technology
visible
worker
working
英文關鍵字
are
business
car
close
concept
engine
equipment
factory
gearbox
hand
holding
machinery
mining
parts
people
plant
repairs
service
sharpening
sparks
technology
visible
worker
working