via https://medium.com/@mrdoro/fast-translation-with-google-translator-and-mac-osx-817e32233b7a
Nice article about how to create a service to automatically translate selected text from any application. I use this all the time, I have a “German-to-English” service bound to Command-Alt-Ctrl-Shift-E, so I can just select text off the screen, press the shortcut, and a window with the translation will pop up. Very handy.