名词
中文翻译：内底
同义词：
['inner side', 'inner surface例句：1. The car has an inner bottom made of leather.（这辆车的内底是用皮革做的。）']
例句：
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1. The car has an inner bottom made of leather.
这辆车的内底是用皮革做的。
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2.The boat has an inner bottom that is smooth and comfortable.
这艘船的内底是光滑舒适的。
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3.The floorboards are designed to fit snugly against the inner bottom of the car.
地板板设计得能紧贴汽车的内底。