这些现象在全世界范围内都有，特别是在那些相对富裕的国家。

These patterns can be found around the world, particularly in relatively rich countries.

youdao

这些现象在全世界范围内都有，特别是在那些相对富裕的国家。

These patterns can be found around the world, particularly in relatively rich countries.

youdao