1、There is not enough evidence to substantiate the claim that she stole the money.
没有足够的证据证实她偷走了钱。

2、Scientists have been working to substantiate the theory through experiments and research.
科学家们一直在通过实验和研究来证实这个理论。

3、The company needs to substantiate their claims of improved customer satisfaction with data and statistics.
公司需要用数据和统计数据来证实他们对改善客户满意度的主张。