Any point within a given Voronoi region is proximal to the data site (black point) associated with that region.
在 iOS 平台上，需要处理 NSData 的转换。这里使用 pinned 内存操作来安全拷贝数据，确保跨平台兼容性。
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After their initial degree and the mandatory two years of post-graduate foundation training, many choose to specialise in a particular area of medicine or surgery.
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