名词
中文翻译：高层山脊
同义词：
['higher level ridge', 'upper ridge例句：1. The mountain range is a natural boundary between the lower and upper levels of the valley.（山脉是山谷低层和高层的自然分界线。）']
例句：
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1. The mountain range is a natural boundary between the lower and upper levels of the valley.
山脉是山谷低层和高层的自然分界线。
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2. The research team used satellite imagery to map the upper-level ridges in the region.
研究小组使用卫星影像来绘制该地区的高层山脊。
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3. The upper-level ridges are home to many rare species of flora and fauna.
高层山脊居住着许多稀有的植物和动物物种。