优越的自然生态条件是长江流域农业文化的物质前提。

The favourable natural ecological condition is the material premise for the agricultural culture of the Yangtze basin.

youdao

优越的自然生态条件是长江流域农业文化的物质前提。

The favourable natural ecological condition is the material premise for the agricultural culture of the Yangtze basin.

youdao