provide corroboration
seek corroboration
lack corroboration
need corroboration
A: Is there any corroboration for your claim?
A：你的说法有任何证实吗？
B: Yes, we have several eyewitness accounts to support it.
B：是的，我们有几位目击者的叙述可以支持它。
1) 证实
2) 确证
3) 证据
1. 证实，确证
noun
1. Evidence that confirms or supports a statement, theory, or finding.
Synonym: confirmation, verification, authentication