I finally found an add-on that is almost identical to the Chrome add-on TransOver (https://chrome.google.com/webstore/detail/transover/aggiiclaiamajehmlfpkjmlbadmkledi?hl=en).

I have a bit of greed about this add-on.
It would be nice to show the definition of a word like TransOver, rather than a Google translation.

Thank you for your efforts.