我按照网站上说的做了：
sudo add-apt-repository ppa:qbittorrent-team/qbittorrent-stable
sudo apt-get update && sudo apt-get install qbittorrent
然后我收到错误信息：
The following packages have unmet dependencies:
qbittorrent : Depends: libqt5xml5 (>= 5.9.0) but it is not installable
E: Unable to correct problems, you have held broken packages.