名词
中文翻译：模型
同义词：
['model', 'mold', 'prototype']
例句：
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1. The engineer designed a new model of the car to improve its efficiency.
工程师设计了一种新型汽车的模型，以提高其效率。
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2. The company uses molds to produce parts for their products.
该公司使用模具来生产他们产品的部分。
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3. The prototype was a test run before the final product was released.
原型是在最终产品发布前的一次测试运行。