The Ricci map gained the nickname the "Impossible Black Tulip of Cartography" because it was so hard to find.

利玛窦的地图被称为“地图学上不可能的黑色郁金香”，因为它很难被找到。

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This should usually be black and white map with little color variations to avoid drastic transitions.

这经常用带有颜色变化的黑白贴图，避免转变过快。

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The group is shown to be within a broken black line on the map.

这个群组在地图上被用黑色虚线所圈出来。

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Activision is readying the first DLC for Black Ops II, the Revolution Map Pack, which will give these fans something new to experience in multiplayer.

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