I have known what it is like to go without food for days.

我已知道数日不吃东西是什么滋味了。

《柯林斯英汉双解大词典》

I have known this.

我已经知道这件事了。

youdao

I have known cases where dogs have nipped babies.

我知道一些狗咬婴儿的事例。

《柯林斯英汉双解大词典》

I have always known the woman who died in those games had a child.

VOA: special.2010.07.31

So these devices, when I was a youngster, were colloquially known as "atom smashers", because they have the capacity to actually break these and have them reform.

这些设备，当我还年轻的时候，它们在口语中被叫做核粒子加速器，因为它们有能力,将这些破碎并重新形成。

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I'll bet even all of you can remember songs that you have known all your life, but not other things.

我打赌你们很容易就能想起你们曾经,听到的歌曲,但别的事就很难

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His name is Mason Sarosi and I have known him since the day he was born.

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Even Keith Boykin, whom I have known for some time, took me to task.

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And that has been the man I have known all of our time together.

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