英文關鍵字
african
afro
amplification
buttons
calipers
cipher
code
combination
craftsman
development
education
electronic
evolution
fabrica
fabrication
foreman
hands
instruction
instrument
invetion
iron
line
machine
male
man
manufacture
manufacturing
master
material
metal
nailer
people
processing
production
progress
rules
save
saving
storage
storehouse
syllable
technic
technology
tool
warehouse
whiteboard
work
workman