to turn sth. upside down 常用做引申义 改变很大,颠覆 可替代change greatly 介绍某颠覆行业的产品时常用
eg. Taobao has upended the Chinese retail market.
The internet has upended industries ,from entertainment to retailing.
Tesla,an electic-car manufacturer,has upended the traditonal auto industry.
造句
Liulishuo,a young company founded in 2012,has upended the way Chinese learn English.