As we known这种用法是错误的。
表达“众所周知”：
as everyone knows 人人都知道这一点
as is known to all 这一点是大家共知的
it is universally known (that) 全世界都知道/地球人都知道
it is widely known (that) 被广泛地知道
Every barber knows (that) 路人皆知（每个剃头的都知道）,
it comes to light (that) 大白于天下
even woman and children all know (that) / it is known even to women and children (that) 妇孺皆知,家喻户晓
没有后面那种用法
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