我不知道是否能独立抚养一个孩子。

I didn't know if I could raise a child by myself.

《柯林斯英汉双解大词典》

我知道你有孩子。

I know you have kids.

youdao

我知道他是前拳击冠军，但有时他像个大孩子！他恨蜘蛛。

I know he's an ex-champion boxer, but he can be a big baby sometimes! He hates spiders.

《柯林斯英汉双解大词典》

I don't know how many kids, generation after generation, get in trouble because they do not remember the following fact.

我不知道有多少孩子,一代又一代,因为没有记住下面的内容而遇到困难

耶鲁公开课 - 基础物理课程节选

because I know a lot of kids are just like,

因为我知道很多孩子也知道，

电子游戏 - SpeakingMax英语口语达人

So I think it's important that they know some other things that the children in Japan are doing now. In fact, we have Japanese e-pals, which is really a great deal of fun.

我认为让孩子们知道,日本小孩所做的别的事情也很重要,实际上，我们有日本网友，这给我们带来了很多乐趣。

麻省理工公开课 - 媒体、教育、市场课程节选