英文關鍵字
armature
builder
building
business
circle
construction
crafts
cutting
disk
drill
electric
electricity
equipment
factory
finishing
glasses
grind
grinder
hand
industry
machine
man
manufacturing
metal
occupation
outdoor
outside
person
place
power
protection
protective
rotation
safety
sander
sharpening
site
sound
sparks
spinning
steel
technology
tool
turning
wear
wheel
work
worker
workshop