An overlay showing population can be placed on top of the map.
可以在地图上加一层显示人口的透明膜。
《牛津词典》
2
The software completes its processing in under 15 minutes producing a plant population count map.
该软件在15分钟内处理好并生成了一张植物种群统计图。
3
Against a backdrop of drastic changes in economy and population structure, younger Americans are drawing a new 21st-century road map to success, a latest poll has found.