名词短语
中文翻译：表面层
同义词：
['outer layer', 'outer surface']
例句：
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1. Theengineer designed the new car with an envelop of surfaces that would protect passengersfrom the elements.
工程师设计了一款新汽车，其外壳层可以保护乘客免受恶劣天气的影响。
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2. The scientist found a wayto envelop the virus in aprotective barrier.
科学家发现了一种方法，可以将病毒包裹在一个防护屏障中。
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3. The company's new product is designed to envelop the user in a comfortable and secureenvironment.
该公司的新产品设计旨在为用户提供一个舒适且安全的环境。