名词
中文翻译：Unknown
同义词：
['courtesy', 'polite copy', 'courtesy copy']
例句：
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1. She sent me a courtesy copy of her latest book.
她给我寄来了她最新书的礼貌副本。
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2. He gave me a courtesy copy of his speech to the conference.
他给了我一份他的演讲稿的礼貌副本。
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3. The company provided us with a courtesy copy of their new product brochure.
公司给我们提供了他们新产品宣传册的礼貌副本。