李佳的妈妈是图书馆的工作人员,小佳佳经常去妈妈工作的图书馆。有一次,佳佳看见一个残疾人叔叔挑选了很多书,走的时候他的轮椅上装得满满的,可还是有几本没处放,看着叔叔无奈的样子,佳佳想:要是有个能够随身携带的图书馆该多好啊! Li Jia's mother is a library worker, and Xiao Jiajia often goes to her mother's library. Once, Jia Jia saw a disabled uncle to pick a lot of books, when walking on his wheelchair packed, there are still a few no place to put, watching the helpless look of the uncle, Jia Jia think: If there is a It's great to be able to carry the library