substantiate
v[Tn]
give facts to support (a claim, statement, etc); prove 用事实支持(某主张、 说法等); 证明; 证实
Can you substantiateyour accusations against him? 你指责他, 能提出事实根据吗?
The fire service began to wonder whether a gas might have caused the fire.
消防部门开始怀疑有一种气体可能会导致火灾。
I have got some wonderful news to tell you. I have been offered a scholarship at a university in Australia for my further education. One hundred and twenty-five students took exams for it, and I was one of the five to be chosen. However, my parents are tr