And even if we begin our journeys at first to escape, the return path is always inside of us.
即使我们一开始是为了逃避而开始我们的旅程，返回的路径总是在我们的内心。
英语百科
Bounce address
（重定向自Return path）
A bounce address is an email address to which bounce messages are delivered. There are many variants of the name, none of them used universally, including return path, reverse path, envelope from, envelope sender, MAIL FROM, 5321-FROM, return address, From_, Errors-to, etc. It is not uncommon for a single document to use several of these names.