You have imagined, probably, a huge underworld of conspirators, meeting secretly in cellars, scribbling messages on walls, recognizing one another by codewords or by special movements of the hand.

• 你们大概想象它是一个庞大的密谋分子地 下网 ，在地下室里秘密开会，在墙上刷标语，用暗号或手部的特殊动作互相打招呼。