unsubstantiated/ˌʌn.səbˈstæn.ʃi.eɪ.t̬ɪd/形容词未经证实的,无事实根据的Companies can be punished for making unsubstantiated claims about their products.公司对产品的说明如果没有事实根据将会受到处罚。想跟读,去练习