don't spesk all you know but know all you speak什么意思（最好是谚语）

don't spesk all you know but know all you speak什么意思（最好是谚语）
don't spesk all you know but know all you speak什么意思（最好是谚语）

don't spesk all you know but know all you speak什么意思（最好是谚语）
不要尽言所知,而要尽知所言.