The mapping function is treated as the basic computing unit in this engine, and the complex mapping operation can be accomplished by the composing of several mapping functions.
该引擎以映射函数作为基本的计算单元，通过映射函数的组合实现复杂的映射功能。
Maps. Google maps is the most popular maps application on the Web and is used by a huge number of mashups and applications, and provides mapping functions for iPhone, Android, and more.
地图- Google地图是互联网上最受欢迎的地图应用程序，还有大量Mashup和应用程序也在使用它，并且还向iPhone和Android等提供地图功能。
They can also be thought of as functions mapping classes to new subclasses.
它们也可以被认为是将类映射到新子类的函数。
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