我正在尝试关注本指南使用 libcurl3 和 4，但无法使用 apt 安装 libcurl3，因为它不可用。
root@raspberrypi:/home/pi/tss/tsschecker-master/git/tsschecker# apt install libcurl3
Reading package lists... Done
Building dependency tree
Reading state information... Done
Package libcurl3 is not available, but is referred to by another package.
This may mean that the package is missing, has been obsoleted, or
is only available from another source
However the following packages replace it:
libcurl4
E: Package 'libcurl3' has no installation candidate