anti-eavesdropping device

• 防窃听装置

anti-eavesdropping device的用法和样例：

例句

1. A tape recording of several dozen voices talking at the same time,used as an antibugging device to make private or secret conversations inaudible to eavesdroppers.
   防窃听多声磁带记录了许多同一时刻说话声音的磁带，用作一种防窃听装置使私人的或秘密的谈话不被偷听者听到。