Now you can all see these hats, and if they turn around to each other, they can see each other's hat.

现在你们都能看清这两顶帽子,如果他们转过来,就也能看到对方的帽子

耶鲁公开课 - 博弈论课程节选

I saw an old lady wearing a big classical hat today.

今天我看到一个年迈的女人戴着一顶很大的复古帽子。

英国皇家赛马会 - SpeakingMax英语口语达人

In fact, from Ale's point of view, this could be a blue hat.

事实上,从艾尔的角度看,这很有可能是顶蓝色的帽子

耶鲁公开课 - 博弈论课程节选

Remember he goes in to the prostitute's house, Mrs. Watts's, and he's got a hat on, and the hat just makes him look like a preacher.

记得有次他去Watts太太的妓院，他戴了顶让他看上去，像传教士的帽子。

耶鲁公开课 - 1945年后的美国小说课程节选

I like that hat.

我喜欢那顶帽子。

I like实战 - SpeakingMax英语口语达人

So again, they both know that someone in the room has a pink hat on their head: it is mutual knowledge that there's a pink hat in the room.

但是他们都知道,至少有一个人戴着粉色帽子,至少有一顶粉色帽子是相互知识

耶鲁公开课 - 博弈论课程节选