Many adults teaching sites bright and spacious, comfortable tables and chairs, books rich with coffee pots and ashtrays, as far as easy and effective adult learning.

• 许多成人教学场所宽敞明亮，桌椅舒适，图书丰富，设有咖啡壶和烟灰缸，尽量让成人轻松而有效地学习。