名词
中文翻译：内层
同义词：
['innermost layer', 'innermost part', 'interior layer']
例句：
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1. The inner layer of the carpet is soft and comfortable.
地毯的内层柔软舒适。
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2. The inner layer of the fabric is made of silk.
这层布料是由丝绸制成的。
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3. The inner layer of the wallpaper is designed to be easy to clean.
墙纸的内层设计易于清洁。