The labour which terminates in the production of an article fitted for some human use,is either employed directly about the thing,or in previous operations destined to facilitate,perhaps essential to the possibility of,the subsequent ones.
英
美
- 生产对人类有用的物品时所使用的劳动,或是直接施加于该物品上,或是用于前面的作业中,这些作业旨在使随后的作业得以实现,也许对完成随后的作业来说是必不可 少的。