English scripting

Scripting for speech and presentation may be different, because you can use abundant slides or interesting videos for the presentation, which will apparently reduce the oral parts. We may estimate a 20 min talk requires 1500 words, then trim it down with those A/V effects mentioned above :)

REF: https://www.presentationmagazine.com/how-many-words-in-a-five-minute-speech-3467.htm