英文關鍵字
adult
arm
auto
automobile
body
car
electric
engineer
equipment
garage
grind
grinder
hand
hard
indoor
industry
instrument
job
machine
male
man
manual
manufacture
mechanic
mechanical
metal
metalwork
occupation
person
polish
profession
professional
repair
repairman
safety
saw
service
spark
steel
technology
tool
weld
welder
wheel
work
worker
workplace
workshop