However, even though it is common, it is important to keep in mind that in a single moment of fatigue, you can say something to your child that you may regret for a long time.

句子主干：it is important to keep in mind that...(it+is+形容词+to do sth.形式主语结构)it是形式主语，真正的主语是to keep in mind。that引导宾语从句：that in a single moment of fatigue, you can say something to your child that you may regret for a long time，in a single moment of fatigue地点状语，句子主干you can say....。that引导定语从句：that you may regret for a long time。

翻译：然而，尽管这种情况很常见，但很有必要牢记：在感到疲惫的瞬间，你可能会对孩子说出一些让自己后悔良久的话