The program lives in your system tray and every n minutes (seted in preferences) asks you to write a translation of words from dictionary. Dictionary file, amount of words, count of asking, start number, time interval can be cofigured.
Some dictionaries may be found here: https://sourceforge.net/projects/lingvist/files/My%20Dictionaries/
You can create your own dictionaries. Editor is here: https://sourceforge.net/projects/lingvist/files/Dictionary%20editor%20%28old%29/