Tell the child you know that he or she is big enough to handle such matters.

告诉孩子，你知道他已经长大了，能够处理这些状况。

youdao

If your child regresses to babyish behaviour, all you know for certain is that the child is under stress.

如果你的孩子退步到幼稚的行为，你可以肯定的是孩子正处在压力之下。

《柯林斯英汉双解大词典》

Each time you replicated that song, and maybe passed it along to someone who did not know it yet, a small child maybe.

每一次你复制那首歌，可能就把它传给了一个不知道这首歌的人，也许是一个小孩子。

youdao

"As a mother my heart went out to all of them. I cannot imagine what it would feel like to know that your child was in prison, for now 100 days, with very little contact between you and them.

VOA: standard.2009.11.05

Every child, every one of you, every one of us was brought up to know that one must never do wrong, even if good consequences are seen to follow.

每一个小孩，在座的各位，我们每一个人都从小被教育,不要做坏事，就算结果是善也不行。

耶鲁公开课 - 政治哲学导论课程节选

And I know that each and every one of you has a child in your life that you are desperately pushing ahead, and you know they can do it.

WHITEHOUSE: THE WHITE HOUSE

Suddenly you know that your child is facing numerous, difficult challenges and a shortened life span.

CNN: Progeria

You know, I want to do everything I possibly can for my own child, but I think, you know, that there's this loss of the value of learning those lessons from failure, and I think it's just getting worse, and it definitely worries me.

NPR: Ask Amy: Responding to the Thin Envelope