英文關鍵字
background
block
business
car
construction
electric
electrical
emergency
energy
engine
equipment
factory
finishing
gas
hammer
hand
industrial
industry
instrument
job
labor
lathe
machine
machinery
makes
metal
modern
old
parts
pipe
plot
power
processing
production
programming
protection
public
pump
saw
security
shoe
shoemaker
shoes
small
steel
technologies
technology
tool
valve
various
water
white
wood
work
worker
workshop