求翻译：相反，中国内部平原广阔，特别是黄河，长江两流域平原毗连，没有明显的天然的屏障可以析划，但四周除东面沿海一方外其余三面皆是地理上的阻绝地带，这种一面临海，其它三面陆路交通极不便利，而内部回旋余地又相当开阔的环境，形成一种与外部世界半隔绝的状态，使中国没有向外部拓展的野心，专心于农耕经济，养成了独自经营，和平温顺的国民性格。所以，中国文化大体上是在本土独自酝酿成长，虽然有外来文化成分由西域或海上传入，但都能消化吸收，使中国文化的发展稳定而富于自信，具有保守性和封闭性的特征是什么意思？

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正在翻译，请等待...

On the contrary, the Chinese internal plain is broad, specially Yellow River, the Yangtze River two basin plains border on, the obvious natural barrier has not been possible to analyze delimits, but all around other three all is in the geography blocks the region besides an east side coast side, thi

Instead, China internal plain broad, especially Yellow River, Yangtze River two basin plain adjacent, no obvious of natural of barrier can on the is zoned, but four week except East coastal party outside remaining three surface are is geographic Shang of resistance must zone, this side linhai, other