管理下载历史：不需要保留下载记录，所以我建议设置当火狐退出时清除下载管理器里的文件。
Download Manager History: There's no need to keep track of all of your downloads, so I suggest setting it to Remove Files From The download Manager When Firefox Exits.
管理下载历史：不需要保留下载记录，所以我建议设置当火狐退出时清除下载管理器里的文件。
Download Manager History: There's no need to keep track of all of your downloads, so I suggest setting it to Remove Files From The download Manager When Firefox Exits.
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