[mì mǎ]
cipher; cypher; cryptogram; steganogram; cipher code; secret code; code
inextricable cipher
破译不出的密码
write in cipher
用密码书写
break a code
破译密码
a figure code
数字式密码
All important plans were sent to the police in cipher.
所有重要计划均以密码送往警方。
The spy sent his message in code.
这个间谍用密码发送情报。