当证据to act as evidence
可以作证的材料太少。
There are too few materials that can act as evidence.
当证人to act as witness
苍天可以作证。
Heaven can be a witness.
他们打架斗殴的事我可以作证。
I can be a witness to their fight.
汉译英翻译词典收录86165条汉英翻译词条，基本涵盖了全部常用中文字词的英语拼写、翻译、音标、读音、用法、例句等，是英语学习的有利工具。