How to quickly translate selected text with replacement on MacOS?

Question

Machine translation from one language to another

We need a translator of the selected word/sentence, preferably pop-up at the place of selection, similar to the built-in dictionary, and not from the menu bar. It is important to be able to replace the selected text with the translated text using a combination of hot keys when typing. The last criterion is a fixed cost. Tell me if you know this. Thank you!