A small child's confusion in distinguishing the right from the wrong is quite natural.

小孩子不明是非是很正常的。

《新英汉大辞典》

I found i was still deep short in distinguishing person.

我发现我依然缺乏辨别人的能力。

youdao

So, here grades can have meant little in distinguishing the excellent from the ordinary.

可是在此，我得说，这样的成绩，在区分优秀和平庸上，没有什么价值。

youdao

In fact,this is the single most common distinguishing characteristic of an American prisoner -- illiteracy.

VOA: special.2009.04.27

"We have to be careful in distinguishing between reality and fantasy, " said Sheen, the fictional Bartlet.

CNN: A presidential sheen

This does not mean that America has a monopoly of wisdom in distinguishing peaceful Muslim citizens from the other sort.

ECONOMIST: Islam, America and Europe

The algorithms proved 88% accurate for determining male sexuality, 95% accurate in distinguishing African-American from Caucasian-American and 85% for differentiating Republican from Democrat.

BBC: Facebook 'likes' predict personality