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全量同步：一次性完成海量数据迁移
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"We know that very well from later periods, but in this very formative period of history, it's not very well understood. So it's a really exciting opportunity."
The A Wall:* Calculating a 200-300km car route (or even shorter bicycle/pedestrian paths) could mean visiting over a million road segments, taking 10-20 seconds. For longer trips, this wait could become frustrating.