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

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。
Later in this service, you will be invited to come forward to receive ashes on your forehead.
在崇拜之后，您将被邀请前来，我们将会用炉灰沾在您的额头上。
Gray and Hunter were the first to come forward.
格雷和亨特首先站了出来。
Police said that several people had come forward with information about the attack.
警察说已经有好几个人提供了关于这次袭击的信息。
Investigations have ground to a standstill because no witnesses have come forward.
调查陷入停滞，因为没有证人站出来。
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。
No witnesses have come forward.
没有目击证人站出来。
Several scholars have already come forward, calling the claims unfounded and contradictory to basic tenets of christianity.
有几位学者已经发表了他们的看法，他们称这些说法都是毫无根据的，并且和基督教基本教义相冲突。
More unusual is her refusal to come forward to offer her evidence.
更加怪异的是她拒绝出来向世人提供她的证据。
The police have appealed to anyone with information to come forward and talk to them.
警察呼吁所有知情的人来和他们谈谈。