BEGIN:VCALENDAR版本:2.0 PRODID:-//hacksw/handcal//NONSGML v1.0//EN CALSCALE:GREGORIAN BEGIN:VEVENT DTSTART:20230508T090000Z DTEND:20230508T101500Z UID:e20744 DTSTAMP:20221223T030756Z位置:Gerhard M.J. Schmidt讲堂描述:标题tbd摘要:标题tbd结束:VEVENT结束:VCALENDAR