Multitran for Mac Workflow
Download, install, assign a shortcut in System Preferences > Keyboard > Shortcuts > Services.
It will ask for text to translate and focus the input field.
When you hit Enter, it will show a popup safari window with Multitran article.
You will get less ads because of iPhone user agent.
Hit Esc when you’re done with translation, and focus will get back to your previous app.
Also you can assign a global shortcut in System Preferences > Keyboard > Shortcuts > Services. Next time you need to translate something, just hit this shortcut!
Original idea: Annie Esther Strugatsky