中文和英文的Presentation.

lol! I have the same problem as you. Try to record your own presentation with your normal speed, and then compare it with a slower version to see how you can improve it. You can ask one of your audience, probably a friend that you can trust to give you some kinds of indictation such as gestures or hand signals during your presentation to remind you to slow down. You can also make more eye contact with the audience and try to find out the response of the audience for everything that you have said. You can also pause between each sentence. I don't know about you but I speak fast because I am nervous, so keep yourself calm may also help. Do you present with the ppt? People tend to speak fast when they have a lot of text to go through in the ppt. You just need to constantly remind yourself to slow down and don't just read out from the slides. If you know your problem, there is no reason you can't do anything to it.