名词
中文翻译：Unknown
同义词：
['conceptual design', 'sketch design', 'preliminary design']
例句：
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1. The outline design of the new product is very innovative.
新产品的轮廓设计非常创新。
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2. The sketch design of the logo was well received by the client.
标志的草图设计受到了客户的好评。
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3. The preliminary design of the building was unveiled at the grand opening ceremony.
建筑的初步设计方案在开幕式上揭晓。