Definition: a fact or a piece of information that shows something exists or is true Level: B2
她向我们出示护照作为身份证明。
She showed us her passport as ___proof of her identity.
他们有证据证明是汉普森偷了货物吗？
Do they have any ___proof that it was Hampson who stole the goods?
孩子的微笑是动物园效用的最佳证明。
The smile of a child is the best ___proof of the utility of zoos.
