名词
中文翻译：通知者
同义词：
['reporter', 'informant', 'messenger']
例句：
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1. The reporter informed the public about the new policy.
记者向公众通报了新政策。
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2. The messenger delivered the letter to the recipient's house.
信使将信件送到收件人家里。
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3.The reporter was asked to provide an update on the ongoing investigation.
记者被要求就正在进行的调查提供更新。