I asked my students if any of them knew what " elocution" was.

我问我的学生是否有人知道“演说术”是什么。

But Stone says that researchers didn't know why.

但Stone表示，研究人员不知道为什么。

It was just that the public didn't know about that.

只是公众不知道这一点。

Poor Puss, I knew it wasn't him.

可怜的普斯，我就知道不是他。

I never knew winter could be so beautiful.

我从不知道冬天能如此美丽。

Achievement is wonderful when you know why you're doing it.

当你知道你为什么这么做的时候，成就是美好的。

She didn't tell him the new address, so how did he know where she was?

她没有告诉他新地址，所以他怎么知道她在哪里？

And when you don't know, it can be a terrible trap.

如果你不知道，它就可能变成可怕的陷阱。

I knew it was gonna be exciting for everyone.

我就知道大家都会很兴奋。

I know Steven Spielberg, you know, that I've known him since I was a kid.

我还认识史蒂文·斯皮尔伯格，我们俩从小就认识。

I flew so high, I didn't know where I was.

我飞得太高了 我都不知道我在哪里了。

However, if you know differently, let us know in the comments.

但是，如果你有不同的了解，请在评论中告诉我们。

No, no, too expensive, I don't know which one to do.

不，不，太贵了，我不知道该怎么用它。

Sometimes in life there are experiences you know you'll never forget.

在生活中，有时会有一些你知道你永远不会忘记的经历。

Another type of seedless vascular plant is ferns, also known as monilophytes.

另一种无籽维管植物是蕨类植物，也被称为单生植物。

And what people may not know is that roses have a second flush.

而人们可能不知道的是，玫瑰花有第二次冲水。

A few months ago, they said they didn't know who I was.

几个月前，他们说不知道我是谁。

But they're not taking about them, you know, with the musical language, musical terms.

但是他们并没有用音乐语言或音乐术语来表达。

Well, we actually don't know for sure, but there are some possible explanations.

具体原因不甚清楚，有一些可能的解释。

So this is the gravitational field on Neptune and you feel, you know what?

这就是海王星的引力场，要说我感觉怎么样？