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In this particular case, since the model is mounted in the articulator, it's not scanned on a perfectly horizontal plane, so to trim it faster we used the polygonal selection tool.
在这一特殊案例中，由于模型安装在咬合架中，因此不会在完全水平的平面上进行扫描，为了可以更快地进行修整，我们使用多边形切割工具。
