translation.en: He looked at me, puzzled, and said, "Why doesn't the mailbox just check itself and tell us when it has mail?"  I was like, "That's a pretty good question."
translation.zh: 他疑惑地看着我，说 “为什么邮箱不能自己检查， 然后告诉我们它有邮件了呢？” 我就觉得，这是个很好的问题