The text in the paper seres just to explain the data, and is secondary. 论文中的正文是为解释数据服务的,因而它是次要的。
Operators could block access or degrade the quality of their data services, but that would antagonise subscribers. 当然,运营商可以阻止此类接入或给他们的数据服务质量降级,但这种行为可能会使他们与自己的客户敌对。