---ldoce5viewer
https://forward-backward.co.jp/ldoce5viewer/
https://github.com/jiedo/ldoce5viewer-pyqt5.git
apt install python-pyqt5.qtwebkit
https://forward-backward.co.jp/ldoce5viewer/
https://github.com/jiedo/ldoce5viewer-pyqt5.git
apt install python-pyqt5.qtwebkit