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To sponsor something is to support an event, activity, person, or organization financially or through the provision of products or services.
They probably talk by using sign language. Do you mean people who are both deaf and blind; like Helen Keller, or do you mean like one person who's blind and one person who's deaf? Not that my answer depends on it, but just asking :-) Im sure there's probobly some new kind of technology out there to also help communication, but i think the easiest way other than that would be sign language, as both blind and deaf usually know it. that is an answer from somebody else and i did not delete their answer because i want you to trust my answers so i am doing a sposer for deaf and blind people the Charity's name is sense a charity i recommend for u to get involved sry i am only 10 so basically they have this language and the following so as you see they communicate my sort of drawling on each others hands so now u know how maybe u wanna try it to a friend spell your name and don't forget to support sense plz leave a message at the discussion page thnx :) bye get to sense