世界地图空白。
The nested map, however, is blank until the programmer fills it in using any of the mapping transforms.
然而,在程序员使用任何映射转换进行填充之前,嵌套映射一直是空白的。
One tool, map Maker, has proved a particular hit with web users, allowing residents in the Indian city of Chennai to fill out a blank map of the area with key roads, streets and points of interest.
一个地图制作工具,已证明对网络用户的影响比较大,它允许在印度钦奈市的居民在空白的地图上填写那个地区的主要道路、街道和有趣的地方。
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