名词
中文翻译：封面草案
同义词：
['cover letter', 'cover note', 'cover sheet']
例句：
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1. The author sent a cover draft to the publisher before sending the final manuscript.
作者在提交最终手稿之前，先向出版社发送了封面草案。
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2. She asked for a cover draft of the report before submitting it to her supervisor.
她在提交报告前要求一份报告的封面草案。
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3. The company requested a cover draft from the client before proceeding with the project.
公司要求客户提交一份项目封面草案后才开始工作。