英文關鍵字
adult
angle
apprentice
arm
carpentry
circle
closeup
construction
cut
cutting
disk
engineer
equipment
flash
force
hand
industrial
isolated
machinery
male
man
manufacturing
metal
metallic
metalwork
operator
orange
part
people
person
pipe
round
saw
sawing
sparks
speed
splash
stainless
steel
steering
tool
tube
welder
welding
wheel
worker
working
workshop
zinc