secret communication的用法和樣例：
例句
- The cryptology becomes a hotspot of information high-tech as the key technology of secure communication.
密碼技術作為保密通信的關鍵技術已成為當代信息高科技的熱點。 - Simulation shows that speech communication is secure as long as the power of the pretreated signal is high enough.
模擬實驗表明，只要預處理信號的功率足夠大，就可以達到保密通信的目的。
