GIS is a basic technical support for position location, navigation and map presentation in LBS.

GIS是LBS的位置定位、导航及地图表达的基础技术支撑。

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While picking up a map, the couple was persuaded to attend a presentation on joining a travel club.

CNN: Watch out for the 'free' stuff

His design has been shown to senior figures at Transport for London in a presentation - though a spokeswoman for the organisation said it had "no plans" to change the tube map.

BBC: London Underground map gets curves in lecturer's design