英文關鍵字
activity
axe
clamp
electricity
equipment
frame
grinder
grinding
grip
hands
human
iron
ironwork
job
machine
metal
motion
object
power
work
英文關鍵字
activity
axe
clamp
electricity
equipment
frame
grinder
grinding
grip
hands
human
iron
ironwork
job
machine
metal
motion
object
power
work