英文關鍵字
arm
bolt
carpenter
clamp
construction
cutting
engineer
equipment
finger
hand
handle
human
industry
instrument
iron
job
key
land
making
male
manual
measurement
mechanic
men
metal
one
part
problems
repairing
restoring
service
spanner
steel
technician
technology
thumb
tool
toughness
twisted
white
work
worker
workshop
wrench