这个房间已经装上了窃听器。

The room had been wired for sound.

那部电话里装有一个微型窃听器。

There was a bug on the phone.

他戴了一个窃听器秘密录下了谈话。

He wore a hidden microphone to secretly tape-record conversations.

他们在她的旅馆房间里装了窃听器。

They bugged her hotel room.

他听说他们正计划在他的办公室安装窃听器。

He heard that they were planning to bug his office.