And, for example, if you're in a school that doesn't have a lot money, probably a lot of schools, or if you're in an office environment, and you want an interactive whiteboard, normally these cost about two to three thousand dollars.
比如说，一所学校， 没有很多钱，大概大部分的学校都是这样， 或者是办公室， 如果你想有一个交互式电子白板， 一般要花上2000到3000美元。