动词短语
中文翻译：双重环
同义词：
['double-round', 'double-ring', 'double-layered例句：1. The double ring of the necklace is intricately designed.（项链的双层设计非常精致。）2. She wore a double-layered coat to keep warm in the cold weather.（她在寒冷的天气里穿了一件双层外套来保暖。）3. The double-layered walls provide excellent soundproofing.（双层墙体提供了极好的隔音效果。）']
例句：
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1. The double ring of the necklace is intricately designed.
项链的双层设计非常精致。
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2. She wore a double-layered coat to keep warm in the cold weather.
她在寒冷的天气里穿了一件双层外套来保暖。
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3. The double-layered walls provide excellent soundproofing.
双层墙体提供了极好的隔音效果。