anti-eavesdrop device

例句：

1. 1.This anti-eavesdrop device can detect and block all types of eavesdropping signals.
   这种反窃听设备可以检测并阻断所有类型的窃听信号。
2. 2.The government has been working on developing an anti-eavesdrop device to protect national security.
   政府一直在努力开发一种反窃听设备以保护国家安全。
3. 3. The anti-eavesdrop device was designed to prevent unauthorized access to sensitive information.
   这款反窃听设备旨在防止未经授权访问敏感信息。