Sorry, no audience only, everyone need to actively participate,there is no discrimination on any type of level, but participation is a requirement. Otherwise, no one is going to present, everyone just want to relax and listen. 必须有付出才有回报,我觉得这是最起码的公正原则
【在 p*******y 的大作中提到】 : +1 here. I am a pure amateur and want to be an audience only.. : . : : presentation