speaker who takes the control can synchronize the materials presented
to the viewers in the group.
This is how you can make it.
http://iapblog.blogspot.com/2007/12/lab-google-presentation.html
張老師與他的科技英文與科普傳播 technical English for Engineering Students
This is how you can make it.
http://iapblog.blogspot.com/2007/12/lab-google-presentation.html
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