Cofi
abbr. confidential 秘密的，机密的
🗣️ 情景例句
OK.
好的。
Ingrate!
忘恩负义的家伙！
Meanwhile, a microphone, which was lowered into the mine two hours ago, has enabled the men to keep in touch with their closest relatives.
与此同时，两个小时以前放下井去的一只麦克风使井下的人可以与其亲属保持联系。