Now, the really fascinating thing is that we have the same system today, except we don't use the postal service as the conduit anymore.

最妙的是,我们现在有同样的制度，除了我们不再将邮政服务作为纽带。

耶鲁公开课 - 金融市场课程节选

What's the conduit?

是通过怎样的渠道呢

耶鲁公开课 - 心理学导论课程节选