名词
中文翻译：双倍框架
同义词：
['double frame', 'doubling frame例句：1. The double frame of the door is designed to keep it closed.（这扇门的双框架设计是用来保持其关闭的。）2. The double frame of the table is strong enough to support a large meal.（这张桌子的双框架足够坚固，可以支撑一顿大餐。）']
例句：
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1. The double frame of the door is designed to keep it closed.
这扇门的双框架设计是用来保持其关闭的。
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2. The double frame of the table is strong enough to support a large meal.
这张桌子的双框架足够坚固，可以支撑一顿大餐。
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3. The double frame of the car is designed to improve fuel efficiency.
汽车的双框架设计是为了提高燃油效率。