名词
中文翻译：土丘层
同义词：
['loess layer', 'loess cap例句：1. The soil scientist studied the layers of the loess to understand its formation.（土壤科学家研究了黄土的层次，以了解其形成过程。）']
例句：
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1. The soil scientist studied the layers of the loess to understand its formation.
土壤科学家研究了黄土的层次，以了解其形成过程。
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2. The loess cap is a natural barrier that protects the land from erosion.
黄土帽是一种自然屏障，保护土地免受侵蚀。
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3. The loess layer is a critical component in the development of desert ecosystems.
黄土层是沙漠生态系统发展的关键组成部分。