Palearctic and Oriental Regions should be based on Huaihe River as dividing line.

我国古北界和东洋界在东部的分界线应该在淮河附近。

youdao

Palearctic and Oriental Regions should be based on Huaihe River as dividing line.

我国古北界和东洋界在东部的分界线应该在淮河附近。

youdao