名词
中文翻译：南部极限
同义词：
['southern border', 'southern boundary']
例句：
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1.The southern limit of the forest is marked by a river.
森林的南部极限是由一条河流标记的。
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2. The southern limit of the continent is where the weather becomes colder.
大陆的南部极限是天气变冷的地方。
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3.The southern limit of human civilization has been reached in some parts of Africa.
人类文明的南部极限在一些非洲地区已经达到。