希望你们知无不言，言无不尽。
I hope you say all you know and say it without reserve".
www.fmprc.gov.cn他是个耿直之人, 一向知无不言,言无不尽.
He is honest and frank, and always says everything he knows without reserve.
context.reverso.net大家都做到“知无不言,言无不颈,这样就正常了.
The normal way is for everyone to say all he knows and say it without reserve.
www.shvs.com.cn我十分有幸能遇到很多十分好的清津人，他们都知无不言，言无不尽，也丝毫不吝啬本人的时间。
I had the good fortune to meet many wonderful people from Chongjin who were both articulate and generous with their time.
dict.youdao.com
