A hush fell over the crowd and I knew something terrible had happened.

人群突然一片肃静，我便知道一定发生了什么可怕的事情了。

《柯林斯英汉双解大词典》

I knew something about him from the old men chatting there.

我从那里聊天的老人处知道了一些关于他的事。

youdao

When my days were constant chaos, I knew something had to change.

当我的日子持续一段时间过的很混乱的时候，我就知道我需要去做改变了。

youdao

I had myself been prime minister in the first Gulf war and I knew that when I said something I was utterly certain that it was correct and I said less than I know,".

VOA: standard.2010.01.02

And then, I mean when I started thinking about all the people issues and doing Psychology, it was like being in the university interacting with a lot of people that it kind of occurred to me that this would be something I was interested in, and like I knew how to do it so I just did.

当我学习心理学,开始思考人与人之间的关系，就像在学习之余,去结识不同的人,似乎我对这些更感兴趣，我知道如何去做，于是我就行动了。

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"Though I was very young, I knew something was very wrong, " said Greenwood, now 84.

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"I knew something was wrong, " Mr. Bermel, a composer, conductor and clarinetist, said in an interview.

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"Because it was releasing so much fuel, I knew something was wrong, " he added.

CNN: Navy jet has 'catastrophic mechanical malfunction,' hits apartments in Virginia