maintain secrecy;keep sth. secret;keep secret;secrecy ;

They had given an absolute assurance that it would be kept secret.
他们信誓旦旦地保证将对此绝对保密。
来源:《柯林斯高阶英汉双解学习词典》Perhaps, when you've heard me out, you'll appreciate the reason for secrecy.
也许当你听我把话讲完后,你就会明白为什么要保密了。
来源:《柯林斯高阶英汉双解学习词典》The exact locations are being kept secret for reasons of security.
确切地点因为安全原因要保密。
来源:《柯林斯高阶英汉双解学习词典》The material consisted only of already published, unclassified information.
这份材料里只有一些已公开的、非保密性质的信息。
来源:《柯林斯高阶英汉双解学习词典》It's pointlessly trying to keep your friendship secret — it's common knowledge already.
你们无须将友情保密——其实已尽人皆知.
来源:《简明英汉词典》
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