whiteboards是whiteboard的复数
whiteboard
美 ['hwaɪt.bɔrd] 
英 ['waɪt.bɔː(r)d] 
- n.白色书写板;白板
 - 网络白黑板;书写白板;白宫报道
 
复数:whiteboards  
n.  | 1. a board with a white plastic surface that is written on with erasable marker pens, used in teaching and in giving presentations 2. a white plastic board in a classroom that a teacher writes on with ink that can be washed off  |