Or essentially more than two standard deviations from the mean.

或者基本上与平均值相差两个以上的标准差。

And we know that 2 is-- actually it's 2 variances or 2 standard deviations from the mean.

我们知道 2 实际上是与均值的 2 个方差或 2 个标准差。

None of these results, it must be said, yet quite reaches the gold standard of confirmation, known as 5-sigma (ie, five standard deviations from the mean) which particle physicists normally demand before they will call something a " discovery" .

必须说， 这些结果中没有一个完全达到确认的黄金标准，称为 5- sigma（ 即， 与平均值相差五个标准差） ，粒子物理学家在将某事称为“ 发现” 之前通常要求这一标准。