a secret or disguised way of writing; a code
密码
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he wrote cryptic notes in a cipher 他用密码书写秘密笔记
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[mass noun]
the information may be given in cipher .信息可能是以密码给出的。
something written in such a code
以密码书写的东西。
a key to such a code
解码。
〈旧〉 零；数字０．
〈喻〉 无足轻重的人（尤指听命于人而无主见的人）；不重要的东西。
a monogram
交织字母，花押字。
[with obj.]put (a message) into secret writing; encode.
把（消息）写成密码。
[no obj.]
〈古〉 做算术。
a continuous sounding of an organ pipe, caused by a mechanical defect
（管风琴音管因机械故障发出的）连响。
(of an organ pipe)sound continuously
（管风琴音管）连响。
"late Middle English （in the senses ‘symbol for zero' and ‘arabic numeral’）： from Old French