我遵循了各种指南，例如
https://computingforgeeks.com/install-virtualbox-ubuntu-debian/
https://tecadmin.net/install-virtualbox-on-debian-10-buster/
在步骤：
apt install virtualbox-6.0
它失败了：
root@debian:~# apt-get update
Hit:1 http://deb.debian.org/debian buster InRelease
Hit:2 http://deb.debian.org/debian-security buster/updates InRelease
Hit:3 http://deb.debian.org/debian buster-updates InRelease
Hit:4 http://download.virtualbox.org/virtualbox/debian stretch InRelease
Get:5 https://download.virtualbox.org/virtualbox/debian buster InRelease [7,733 B]
Get:6 https://download.virtualbox.org/virtualbox/debian buster/contrib amd64 Packages [1,521 B]
Fetched 9,254 B in 2s (4,145 B/s)
Reading package lists... Done
root@debian:~# apt-get install virtualbox-6.0
Reading package lists... Done
Building dependency tree
Reading state information... Done
Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.
The following information may help to resolve the situation:
The following packages have unmet dependencies:
virtualbox-6.0 : Depends: libcurl3 (>= 7.16.2) but it is not installable
Depends: libvpx4 (>= 1.6.0) but it is not installable
Recommends: libsdl-ttf2.0-0 but it is not going to be installed
Recommends: linux-headers-generic but it is not installable or
linux-headers-generic-pae but it is not installable or
linux-headers-686-pae but it is not installable or
linux-headers-amd64 but it is not going to be installed or
linux-headers-2.6-686 but it is not installable or
linux-headers-2.6-amd64 but it is not installable or
linux-headers but it is not installable
Recommends: linux-image but it is not installable
E: Unable to correct problems, you have held broken packages.
我尝试手动安装这些依赖项，但如果我尝试安装 libcurl3，它会告诉我只能安装 libcurl4。如果我安装 libcurl4，它似乎不会影响任何东西，因为它需要 libcurl3 而不是 4。
