roll 有一个意思是 滚动，刚来多伦多时，看商店悬挂很多彩色纸片，很喜气的写着“Roll Out”，直译就是“滚出去”了。刚查了一下，是新品上市的意思。
roll (sth) out
to make a new product, service or system available for the first time
The government plans to roll out a series of tax cuts over the next few years.
[I or T usually + adverb or preposition] to (cause to) move somewhere by turning over and over or from side to side