名词
中文翻译：纵向沙丘
同义词：
['longitudinal ridge', 'longitudinal swell例句：1. The longitudinal dune is a natural barrier that separates the two sides of the river.（纵向沙丘是一条自然的屏障，将河流的两侧分隔开来。）2. The longitudinal dune is an important geological feature in this region.（纵向沙丘是该地区的一个重要地质特征。）']
例句：
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1. The longitudinal dune is a natural barrier that separates the two sides of the river.
纵向沙丘是一条自然的屏障，将河流的两侧分隔开来。
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2. The longitudinal dune is an important geological feature in this region.
纵向沙丘是该地区的一个重要地质特征。
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3. The longitudinal dune is formed by the wind eroding the sand from the riverbed.
纵向沙丘是由风从河床上吹蚀出的沙子形成的。