你再来看看这个？

http://web.mit.edu/committees/fswg/best-practices.html

For residential dining, Harvard sells a single board plan (21 meals per week) which must be purchased by all residential undergraduates; its food service assumes that students eat 13.7 meals per week on average. Price of the board plan is $3326, which covers a total of about 700 meals (this works out to about $4.75 per meal). All meals are full meals that include salad, entree, side dishes, drinks, desserts, etc. All meals are all-you-can-eat as well. For standard meals, the menus are set centrally, so that all dining halls serve the same fare. Dining Services sees this as its biggest advantage in that it allows students to "feel comfortable everywhere they go" and establish a "family atmosphere," but also sees it as a major disadvantage since it gives the dining halls little flexibility to be creative.