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飞行航路规划是一个大范围多目标多约束的三维规划问题。
Air route planning is a three-dimensional planning problem, with wide range, many objects and many constraints.
城市规划设计在未来城市景观建设中起着越来越大的作用，应该改当前的“二维规划”为“三维规划”，以适应景观建设的需要。
Urban planning should be improved from "two-dimension" to "three-dimension" to meet the need of the construction of city landscape.
二维和三维地图是规划挖掘工作的有用工具，可以描绘遗址的外观，并展示考古研究的结果。
Two- and three-dimensional maps are helpful tools in planning excavations, illustrating how sites look, and presenting the results of archaeological research.
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