单词geographic range
un.: 地理射程网络: 地理视距；地理视程；地理分布范围
地理射程
Populations of this grass from different parts of its geographic range have sometimes been separated at specific or varietal rank.
这草从不同深裂的它地理分布区的居群有时已经被在有变异成列具体的或分开了。