名词
中文翻译：认证代理
同义词：
['certificate authority', 'certification authority']
例句：
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1. The company's authentication agent is responsible for verifying the authenticity of all documents.
公司的认证代理负责验证所有文件的真实性。
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2. The authentication agent confirmed that the product was genuine.
认证代理确认该产品是真品。
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3. The authentication agent conducted a thorough investigation into the incident.
认证代理对事件进行了彻底的调查。