What is sustain ne demek?

As an AI language model, I do not have context to infer what exactly it is that you're looking for, but here's some general information about "sustain ne demek" that could be helpful:

"Sustain" is an English word which means "to support, keep up, or maintain". "Ne demek" is a Turkish phrase which can be translated to mean "what does it mean". Therefore, "sustain ne demek" would translate to "what does sustain mean" in English. If you have a specific context or area of interest related to the term "sustain", please provide more specific information or context so I can assist you better.