如果数学是对纯理念王国的感知的话，那么研究数学就需要让自己的大脑以某种方式抵达现实世界之外的某地。

If mathematics is the perception of this realm of pure ideas, then doing mathematics requires our brains to somehow reach beyond the physical world.

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数学是研究纯量之科学。

Mathematics is the science of pure quantity.

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在研究纯方位系统目标运动分析（TMA）的数学模型中，有些存在原理性错误。

There are foundational mistakes in some mathematic models about TMA in bearings-only system.

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