1、The painting was determined to be unauthentic and was removed from the museum's collection.
这幅画被判定为不真实的，并被从博物馆的馆藏中移除。
2、The website claimed to sell authentic designer handbags, but many customers received unauthentic replicas.
该网站声称出售真正的设计师手提包，但许多顾客收到的都是赝品。