come forward

英 [kʌm ˈfɔːwəd]

美 [kʌm ˈfɔːrwərd]

自告奋勇; 主动提供（信息）

柯林斯词典

PHRASAL VERB 自告奋勇;主动提供(信息)
If someonecomes forward, they offer to do something or to give some information in response to a request for help.
1. A vital witness came forward to say that she saw Tanner wearing the boots.
  一位非常重要的证人站出来说她看见坦纳穿着那双靴子。

verb

make oneself visible
1. Young people should step to the fore and help their peers
Synonym:come to the forestep forwardstep upstep to the forecome out

Please, come forward, whoever you are.
不论你是谁请你过来。
Those who do not come forward should be hunted down
对于那些不肯自首的罪犯应予缉拿归案。
No witnesses have come forward.
没有目击证人站出来。
Gray and Hunter were the first to come forward.
格雷和亨特首先站了出来。
Grace appeared in the dining-room light but didn't come forward. "The lady go?" she said.
格雷斯在餐厅的光亮里现身但是没往前走。“那位女士走了吗？”她说。
A vital witness came forward to say that she saw Tanner wearing the boots.
一位非常重要的证人站出来说她看见坦纳穿着那双靴子。
Nobody has yet come forward with any information relating to the girl's death.
还没有人出来提供关于这女孩之死的任何消息。
If someone would like to come forward to help with the school trip we should be extremely grateful.
如果有人愿意资助学校的旅行的话，我们将感激不尽。
We have had more late-breaking clinical trials than ever before with lots of new sciences come forward.
最新临床试验也较以往要多，许多新兴科学也得到了发展。
If he's willing to come forward on our behalf, we're sure to succeed.
他要肯出头，咱们这件事准能成功。