He admits he doesn't even know when his brother is in town.

他承认甚至不知道他的兄弟什么时候在镇上。

《柯林斯英汉双解大词典》

It's a bit inconsiderate of her not to let you know when she expects to arrive.

她不让你知道她什么时候会到，这样做有些不体谅人。

《柯林斯英汉双解大词典》

How do we know when this figure was carved?

我们怎么知道这个雕像是什么时候雕刻的呢？

youdao

Myra Olmeda is the teacher. "So what happens is when these both groups together, they're learning,you know, one from the other -- which is the greatest thing that is happening."

VOA: special.2010.06.17

I know not what the younger dreams-- Some vague Utopia--and she seems, When withered old and skeleton-gaunt, An image of such politics.

我不知年幼者梦想什么-,某种模糊的乌托邦--她仿佛，当枯萎衰老瘦骨嶙峋的时候，这类政治的一个鬼影。

耶鲁公开课 - 现代诗歌课程节选

Top-down processing is an example of when you know what something is you hear it that way.

举例来说,自上而下加工就是,当你知道某句话是什么的时候,你便会按照这句话去听

耶鲁公开课 - 心理学导论课程节选

There's, you know - when we were making this record and writing it - first of all, it's noteworthy to say that we actually wrote it within eight days.

NPR: The LeeVees, Rocking Hanukkah

Mr. VERRALL: And Starbuck's also confirmed it, which, you know - so when - actually when it gets brewed, the acidity goes away.

NPR: Vegetable Gardening On A Budget

But it - you know, when you said that to me, I just - all I could do was like, grab my heart.

NPR: Rocky Mountain Activist Carole King