You'll need to provide your own mapping layers, but you'll be able to host the entire application in the privacy of your own server.

您将需要提供自己的地图绘制层，但可以将整个应用程序托管到自己的服务器上，从而保持它的隐私性。

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Last September, it bought Placebase, another mapping startup, which adds layers of data on top of maps.

去年九月，苹果就收购了Placebase，一家可以为地图添加数据层的创业公司。

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Geologists from the Utah Geological Survey found the fossil while mapping rock layers in the mountain in 2005.

来自犹他州地质调查局的地质学者在2005年绘制该山脉岩层时发现了这块化石。

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Besides tracking pollution, watching volcanoes and measuring icebergs, they are following fish around, monitoring changing temperatures in different layers of seawater and mapping the abundance of algae.

ECONOMIST: Fleets of robot submarines will change oceanography