apertium-en-eu software package provides virtual package provided by apertium-eu-en, you can install in your Debian 9 (Stretch) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install apertium-en-eu
apertium-en-eu is installed in your system.
Make ensure the apertium-en-eu package were installed using the commands given below,
$ sudo dpkg-query -l | grep apertium-en-eu*
You will get with apertium-en-eu package name, version, architecture and description in a table
| Distro | Debian 9 stretch |
| Section | Virtual packages |
| Package | apertium-en-eu |
| Version | |
| Description | virtual package provided by apertium-eu-en |
| Sub Section | Virtual |