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。

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Whether the error lay with the Central Intelligence Agency or the National Imagery and Mapping Agency, some American experts say the bombing is the result of an overly complex and outmoded intelligence bureaucracy.

CNN: DELICATE MISSION TO CHINA