英語翻譯
To take an example.One man draws out the wire,another straightens it,a third cuts it,a fourth points it,a fifth grinds it at the top for receiving the head; to make the head requires two or three distinct operations; to put it on,is a peculiar business,to whiten the pins is another; it is even a trade by itself to put them into the paper; and the making of a pin is,in this manner,divided into about eighteen distinct operations.
——Adam Smith,The Wealth of Nations,1776