[mì mǎ]
cipher; cypher; cryptogram; steganogram; cipher code; secret code; code
inextricable cipher
破譯不出的密碼
write in cipher
用密碼書寫
break a code
破譯密碼
a figure code
數字式密碼
All important plans were sent to the police in cipher.
所有重要計劃均以密碼送往警方。
The spy sent his message in code.
這個間諜用密碼發送情報。