英文關鍵字
adjustable
adjustment
architecture
assembly
assistance
automobile
background
blue
bolt
business
chrome
commissioning
construction
copy
engine
engineering
equipment
frame
hand
handtool
head
industry
installation
iron
lock
male
man
mechanic
metal
new
object
old
people
person
renovation
safety
scaffold
site
space
spanner
steel
strength
technology
together
tool
wall
white
work
worker
wrench