I have skills in communication, and translation from Mandarin into English is my specialty, as I have done this both with other texts (not via this website) as well as with speakers at my church. I can translate both simplified as well as traditional Mandarin. A big advantage for you if you hire me is that I am born in the US and so have a clearer sense of the nuances of the English language, as opposed to some of the other more generic translator. Also, the only reason I have not taken the US English 1 is that I don't have $ in my account. After this job, I will! If you can clarify what subject area your oral presentation is in, that would be great!