intended to be kept secret
保密的;机密的
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confidential information 机密情报
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we won't name the informant because it's confidential. 我们不会说出提供消息者的名字,因为这是保密的。
(of a person's tone of voice)indicating that what one says is private or secret
(语气)表示所言是保密的;私下的
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he dropped his voice to a confidential whisper. 他压低嗓音,用隐秘的口吻窃窃私语。
[attrib.]entrusted with private or restricted information
受到信任的;因受到信任而了解机密的;被视为心腹的
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a confidential secretary 机要秘书。