No accurate maps existed.

存在的不一定是正确的。

youdao

Winter 1941, the German army on the use of accurate maps.

1941年冬季后，德军使用上精确的地图。

youdao

It was not until the 14th century that more accurate maps began to appear.

直到14世纪较精确的地图才开始出现。

youdao

Last week,the space agency announced the most accurate maps ever of Mars.

VOA: special.2010.07.28

They have produced highly accurate maps of the Cosmic Microwave Background (CMB) radiation, which has its origins in the very early stages of the Universe.

BBC: Pictures of the early Universe

In addition to highly-accurate maps, Telmap users can now access other TomTom content, including Points of Interest, Junction Views, 3D City Maps and Voice Maps.

ENGADGET: TomTom to supply maps to Intel's Telmap, creates a total navigation app package

Navteq claims it has the most accurate maps in the world, in part because it sends out more than 700 workers in vans every day to take down detailed road information.

FORBES: Nokia Redraws The Map