passive repeater

例句：

1. 1.The device is designed to operate as a passive repeater for long-distance communication.
   该设备设计用于作为长距离通信的被动中继器。
2. 2. In the network, the passive repeater acts as a relay station, transmitting signals from one node to another.
   在网络中，被动中继器充当一个中继站，从一节点传输信号到另一节点。
3. 3. The passive repeater helps to maintain the integrity of the signal by retransmitting it after it has been received by the receiver.
   被动中继器通过在接收器接收到信号后重新传输它，帮助保持信号的完整性。