You all know why I am here, so I won't waste time on preliminaries.

你们都知道我为什么来这儿，因此我就不浪费时间作介绍了。

《柯林斯英汉双解大词典》

You all know why I am here. So I won't waste time on preliminaries.

你们都知道我为什么在这里。所以我就不浪费时间讲客套话了。

《柯林斯英汉双解大词典》

youdao

"As you all know,our family is a lot like your family.

VOA: standard.2010.06.05

This is one picture that probably you all know what it is when you see it, it's a familiar looking image.

这张图片,一眼便知其中乾坤,太眼熟了

耶鲁公开课 - 生物医学工程探索课程节选

You know, I couldn't invite a hundred people and buy them all shoes, you know, to my daughter's birthday party, so

我不会请一百个人来参加我女儿的生日聚会，还给他们每人买双鞋，所以，

富家孩子的生日 - SpeakingMax英语口语达人

As you all know, Chicago is truly a city of neighborhoods, separated by parks and boulevards.

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And you all know that bureaucrats don't change with presidential leadership at the top.

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As you all know, we're trying to do what's in the best interests of the game.

WSJ: BCS Commissioners Reach Consensus on Playoff Plan