一块黑板和粉笔和掸子……好久没见过这种东西了！！……很惊讶这块讲座居然没有用到白板/powerpoint####[['黑板', 'Teaching_Setup', 'NEU'], ['粉笔', 'Teaching_Setup', 'NEU'], ['掸子', 'Teaching_Setup', 'NEU'], ['讲座', 'Course_General_Feedback', 'POS'], ['白板', 'Teaching_Setup', 'NEU'], ['powerpoint', 'Teaching_Setup', 'NEU']]