testify
单词辨析：
普通用词，指以事实等证明某事是真实的。
Tests have proved that the method works.
实验证明该方法有效。
How can you prove that he has cheated in the exam?
你如何证明他在考试中作弊了？
尤指经过某种检验而证实某事正确或真实。
The accounts of that company were certified by the investigators.
那家公司的账目经调查员核实过。
She had to show the paper to certify that she was in good health.
她得出示她的健康证明。
指通过更多的证据确定某事是真实的。
They need new evidence to confirm his story.
他们需要新的证据来证实他的说法。
To confirm her conjecture, she has to do some tests.
为了证实她的猜测，她需要做一些试验。
指清楚地论证或证实某事。
His study demonstrates the link between sleep quality and work performance.
他的研究证明了睡眠质量和工作表现之间的联系。
You have to demonstrate that you are reliable.
你得证明自己是靠得住的。
指清楚地说明某种情况，常后接介词 to。
Skyrocketing prices testify to the depth of the inflation.
飞涨的物价说明了通货膨胀的严重程度。
The waste paper and cigarette ends that can be seen everywhere testify that littering hasn't been stubbed out.
随处可见的废纸、烟头说明乱扔杂物的习惯并未得到根除。
相关例句：
Using a simple example, we testify the feasibility of this method.
并结合一个简单的例子，验证了方法的可行性。
Lastly, a test is given to testify the correctness of the design.
最后，通过测试验证了系统设计的正确性。
Fiers promised to testify fully and truthfully
菲耶尔承诺所作证词将毫无保留且句句属实。
They testify to the extraordinary potency of his personality
这些事情证明了他非凡的人格魅力。
I can testify to the credentials of the clientele.
我可以证明委托人的资质。
I have a right to testify.
我有做证的权利。