Multiple levels continue in spiral, so the station functions as a complex that brings in streets in vertical layers.
不同的层以螺旋式上升，因此地铁站起了将街道垂直化的复合体的作用。
There are some different definitions on multiple valued functions in several complex function textbooks.
针对不同《复变函数》教材，对于一些多值函数定义不同而易于混淆的问题进行了分析。
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