1．witness n. 目击者；证人；证据 vt. 当场见到；目击
a witness to ……的目击者
bear/give witness (to) 证明；作证
call to witness 请……作证；传……作证
witness to(doing) sth. 作证
[即学即练1](1)The successful launch of Shenzhou Ⅶ is ________________________ our country‘s increasing prosperity.“神舟”七号的成功发射是我们伟大祖国日益强盛的有力见证。
