您即将离开北大未名BBS,访问
https://blog.daliansky.net/macOS-Catalina-10.15.5-19F96-Release-version-with-Clover-5118-original-image-Double-EFI-Version-UEFI-and-MBR.html
该网址与北大未名BBS无关,提醒您访问时注意判断信息真伪。