1. Is it necessary to appear inside the video with your own voice? 2. I noticed that udemy seems to have a lot of English-speaking students, and I originally wanted to use a translated voice to be able to better reach students, and I want more people in the world to be able to understand my course. Would very few people buy the course if it was in Chinese? Please give me guidance! 3. If I have to use my own voice! Can I use Mandarin and then add Chinese with English subtitles to achieve good results? 4. Does udemy have a function in the backend that can translate to different languages? Thank you for your help!
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