не знаю, как это делается

I don't know how it's done

→ не
phrase Rare #24,689
I don't know how it's done A common way to say that you do not know how to do something or how a process works. Literally, “I don’t know how this is done.”
RU: Я не знаю, как это делается, но могу попробовать.
EN: I don't know how it's done, but I can try.