1.Yes, assistantship holders are required to teach 20 hours or to do 20 hours of research a week.All assistantships carry a stipend and most provide a tuition waiver.是什么意思_1.Yes, assistantship holders are required to teach 20 hours or to do 20 hours of research a week.All assistantships carry a stipend and most provide a tuition waiver.在线翻译_英语_读音_用法_例句