Blue squares on a link represent one or more functions used for data transformation. Fortunately, the mapping has already been done and you just have to adjust it.

连接上的蓝色方块表示一个或多个用于数据转化的方法。

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Fortunately for them, assembling all that data back in Mountain View was a far less rigorous task: Google engineers use their mapping software to link the photos to their shooting locations and string them together to create the panoramic paths users walk through.

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