Free is something that comes with digital, because the reproductioncosts are essentially free. It comes with IP, because it's such an efficient protocol.
免费是随数字化而产生的因为复制的成本基本上是免费的,免费随着IP而来,因为这是一个非常有效的协议。
2
Art history periodicals, for example, are extremely expensive to publish because of the reproductioncosts, and subscriptions pay for those as well as some of the discipline's annual gatherings.
The invention ensures that the public switched telephone is used as much as possible, which, in addition to a better sound reproduction, is favourable in terms of costs.