（由英国或爱尔兰政府资助的全国地形测量局所绘制的）全国地形测绘详图a very detailed map of an area of Britain or Ireland, prepared by an organization called theOrdnance Survey , which is supported by the government
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averydetailedofficialmapofapartoftheUK
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陆地测量地图
... 地图 MAP 陆地测量地图Ordnance survey map 旅游文学 Travel literature ...