空白地域（blank area）指的是地图上没有标注任何信息的地方。这种说法可能源于地图的本意是用来记录和展示某个地区的特征和信息，而空白地域就是没有这些信息的地方。
例句：
"The map showed a large blank area in the middle of the continent, indicating that pttle was known about that region."（地图上有一个大的空白地域，表明人们对那个地区知之甚少。）
"Explorers have always been drawn to blank areas on the map, eager to fill in the unknown and add to our knowledge of the world."（探险家一直被地图上的空白地域吸引，渴望填补未知领域并丰富我们对世界的认知。）
"There are still many blank areas on the map of the ocean floor, waiting to be explored and studied."（地图上仍有许多海底空白地域等待被探索和研究。）
例句：
"The map showed a large blank area in the middle of the continent, indicating that pttle was known about that region."（地图上有一个大的空白地域，表明人们对那个地区知之甚少。）
"Explorers have always been drawn to blank areas on the map, eager to fill in the unknown and add to our knowledge of the world."（探险家一直被地图上的空白地域吸引，渴望填补未知领域并丰富我们对世界的认知。）
"There are still many blank areas on the map of the ocean floor, waiting to be explored and studied."（地图上仍有许多海底空白地域等待被探索和研究。）