In Firefox, Private Browsing mode automatically erases your browsing information like passwords, cookies, and history, leaving no trace after you close out the session. Edge on the other hand, actually records browsing history in their private mode (called “InPrivate”) and it’s a relatively easy task for someone to reconstruct your full browsing history, regardless of whether your browsing was done in regular or InPrivate mode.
Firefox 的隐私浏览模式在您关闭对话后会自动清除浏览信息，包括密码、cookie 和浏览历史，不会留下任何痕迹。而 Edge 即使在其隐私模式（叫做“InPrivate”）实际上也会记录浏览历史，因此，不管您是用普通模式还是用 InPrivate 模式上网，重现您的完整浏览历史都是比较容易的事情。