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

Ben, I want whoever's responsible to come forward.
本，我希望不管是谁的责任，他都能够站出来。
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。
The people kindly made way for the poor man, so that he could come forward.
人们友好地为那个可怜的人让路，好让他走到前面来。
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。
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。
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。
He crooked his finger: 'Come forward,' he said.
他勾勾手指说：“过来。”
Expect the best, and the best will come forward.
期待最好的情况，最好的情况会来临的。
No witnesses have come forward.
没有目击证人站出来。
As I call your name, please come forward and tell us about your Christmas wish.
在我叫道你的名字时，请走到前面来，告诉我们你的圣诞愿望。