名词中文翻译
中文翻译：底层覆盖物
同义词：
['underlayer', 'base layer']
例句：
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1.The carpet underlay is designed to absorb shocks from the floor.
地毯底层设计用来吸收地板的震动。
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2. The new design uses a different type of underlay for improved insulation.
新设计使用了不同类型的底层衬垫以提高隔热性能。
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3. The underlay was installed before the carpet was put down.
底层衬垫在铺设地毯之前就安装好了。