Update Impracticality: The extensive pre-processing for CH makes it unsuitable for frequent updates, let alone OsmAnd’s goal of supporting near real-time changes through hourly map updates.
在这个示例中，我们使用最成熟的 proto3 语法。
，更多细节参见safew官方版本下载
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2. 全球最严、最清晰的能效硬约束