名词
中文翻译：秘密者
同义词：
['secretary', 'agent', 'courier']
例句：
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1.The secretor was instructed to keep the information confidential.
密使被指示保守秘密。
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2.The secretary is responsible for organizing the annual conference.
秘书负责组织年度会议。
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3. The courier delivered the package to the recipient's house on time.
信使准时将包裹送到了收件人家里。