Not "lower" the level, just increase the readability :) Cant still discuss lots of complicated ideas in language that is easy to understand.
In a former job, I needed to simplify work instructions and process docs so our International staff with non native English mastery could read them quicker.
I used this method to simplify the documents without simplifying the content. :)
Involved a lot of writing and editing for clarity, though.
Well, I just write how I think I guess... and btw, English is not even my second language. My first was Russian, second was Ukrainian and then I learned English and German, though German I mostly forgot by now.
I really respect polyglots! I can't fit all that stuff in my head
This is key.