英文關鍵字
arm
auto
automobile
block
bolt
car
close
crankshaft
cylinder
dirty
engine
fitting
fixing
garage
grease
hand
industry
job
machine
maintenance
man
mechanic
mechanical
metal
motor
oil
part
piston
profession
repair
repairman
ring
rocker
service
shop
technician
technology
tool
transmission
valve
vehicle
work
worker
working
workshop
wrench