"come forward" in Chinese (Simplified)
站出来出面
Definition
主动提供帮助、信息，或主动现身，特别是在有人请求或需要的时候。
Usage Notes (Chinese (Simplified))
多用于正式或官方场合，例如警方调查（“警方呼吁证人站出来”）。强调勇气或主动性，指的是主动表达而不是实际走到前面。
Examples
The police asked anyone with information to come forward.
警方请求任何有信息的人**站出来**。
No one was willing to come forward to help.
没有人愿意**站出来**帮忙。
If you know the answer, please come forward.
如果你知道答案，请**站出来**。
It took courage for her to come forward about what happened.
她鼓起勇气**站出来**讲述所发生的事。
We're still waiting for someone to come forward and claim the prize.
我们还在等有人**站出来**领取奖品。
After a week, nobody had come forward with new evidence.
一周后，仍然没有人**站出来**提供新证据。