这就是为什么最近几届世博会越来越多地选择将这种主题作为其核心理念与组织原则。

This is why more recent Expos have elected the theme as their central core and organizing principle.

youdao

这就是为什么最近几届世博会越来越多地选择将这种主题作为其核心理念与组织原则。

This is why more recent Expos have elected the theme as their central core and organizing principle.

youdao