Quick Translate

Select the text you would like to translate and press the SHIFT button

If you would like to translate a text typing directly you can use the browser action (Quick Translate icon on the top right corner) button

Default shortcut for browser action is CTRL + Q

You can change it from chrome://extensions/configureCommands
You can use this option to remind the words you have added to list.
This will help you to memorize words.