south和southern之间的区别是什么?

south和southern之间的区别是什么? south 和southern 的区别 south和southern的区别 south,southern的区别 south和southern的用法与区别 South China 和Southern China 的区别是什么?范围不同?大小不同?涉及主权? South Africa和Southern Africa区别? south southern southest的区别与用法 south和southern意思和用法区别,请举例说明. south southern 南方的adj 有什么区别? in south China /in southern China 区别 South China 和southern China有什么区别?我一直没搞清楚