Part three mainly explores the relationship between the subscription book and the selling and buying contract from the aspects of practice and theory.

第三部分从理论和实际两方面探讨认购书与买卖合同的关系。

youdao

A subscription book is the documentation subscribed by the parties of commercial house business when they sign trade contract or pre-contract, it validates the matters of house business.

认购书是商品房买卖双方当事人在签署预售契约或买卖契约前所签订的文书，是对双方交易房屋有关事宜的初步确认。

youdao

Sign up and try out the service; you may find it works for you and at the least, you get a free book or subscription time.

这时候不妨注册一下，你可能会觉得不错的，而且至少你能得到一本免费有声书籍或一段时间的免费订阅服务。

youdao

According to The Wall Street Journal, Amazon will soon launch a subscription-based book service, charging a monthly fee for access to a library of e-books.

FORBES: Morning Tech Wrap: Amazon, Yahoo, AT&T

To Amazon, the devices are just delivery channels for more content and the e-reader push towards lower and lower price will allow the company to throw e-readers in with the delivery of a book or a large enough commitment to a content subscription.

FORBES: Living Room Tech in 2013

Major publishers are taking wildly different approaches to resolving the woes surrounding e-book lending at libraries: they're experimenting with both the short-yet-cheap subscription as well as an expensive option to pay only once for perpetual use.

ENGADGET: Macmillan tests selling e-books to libraries in two-year stretches