见证人的英文：
witness

参考例句：

A character witness
见证人

an ocular witness
目击者,见证人

Were there any eyewitnesses to the murder crime?
这桩谋杀案有没有见证人?

All the surviving witnesses testify that he completely lost control of himself.
所有还活着的见证人后来都说他已经完全丧失了自制力。

Will you act as witness to the agreement between us?
您作我们协议签署时的见证人行吗

They seemed to me like envoys from the populace who were condemned to witness the tragedy from front-row seats
在我看来，他们有如人民的使者，注定着要身临其境充当这出悲剧的见证人。

witness是什么意思：
n. 目击者；见证人；证人；证据；证言
v. 目击；注意到；为...作证；证明

There is a witness everywhere
群众的眼睛是雪亮的

Wit Bought is better than wit taught
不经一事,不长一智

Long hair and short wit
头发长,见识短

Great wits have short memories
贵人多忘事

Sloth turneth the edge of wit
懒惰会磨去才智的锋芒