walls have ears

n.

隔墙有耳；

Walls have ears
Walls Have Ears
Walls Have Ears
The walls have ears: optimize sharing for visibility and privacy in online social networks
Do the Walls Have Ears-Indigenous Title and Courts in Australia
When confessional walls have ears: The changing clergy privileged communications law
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Walls Have Ears: Using Conductive Surfaces of Furniture and Everyday Objects for Room-Wide Power Usage and Crowd Activity Sensing
Walls Have Ears: Using Conductive Surfaces of Furniture and Everyday Objects for Room-Wide Power Usage and Crowd Activity Sensing
Walls Have Ears! Opportunistically Communicating Secret Messages Over the Wiretap Channel:from Theory to Practice
The walls have ears at the museum