这些密码破译员成功破解了敌人的机密通信。

The ___code-breakers successfully decrypted the enemy's secret communications.

这些数学竞赛的获奖者都是真正的密码破译高手，能轻松解决复杂问题。

The winners of this math competition are true ___code-breakers, solving complex problems with ease.