At its most basic level, middleware is nothing but a way of abstracting access to a resource through the use of an Application Programming Interface (API).

在它最基本的层次，中间件只是通过使用应用程序编程接口(Application Programming Interface, API)访问资源的抽象的方法。

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Similarly, there is the potential for advancements in how users access online services at a more basic level.

FORBES: Yet Again Consumers Rank Identity Theft As Top Concern

While the Small Island Developing States (SIDS) of the Caribbean have made remarkable progress in-terms of access to basic education for all and to the subsequent education level, and their education systems.

UNESCO: Education Planning Workshop for the Caribbean