sub·stan·ti·ate /səbˈstænʃieɪt/ verb [transitiveT] formalPROVE to prove the truth of something that someone has said, claimed etc 证明,证实 Katzen offered little evidence to substantiate his claims. 卡曾拿不出什么证据来证明他的说法。
—substantiation /səbˌstænʃiˈeɪʃən/ noun [uncountableU]