我想我会知道我的帽子是否在帽架上。

I think I would know if my hat was on the hat rack.

youdao

伊萨的白色沙滩帽在刺目的灯光下闪闪发光。

Issa's white beach hat gleamed in the harsh lights.

《柯林斯英汉双解大词典》

一个戴纸帽的男子在拼命地打手势。

A man with a paper hat upon his head was gesticulating wildly.

《柯林斯英汉双解大词典》

At my maximum, I'll put a hat over it to indicate this is the argmax; at my maximum I'm going to set this thing equal to 0.

给每个最大值都标注上一个帽来,在最大值处导数方程等于0

耶鲁公开课 - 博弈论课程节选

To make this a first order condition, I'm going to say "at the best response," put a hat over the 1.

为了达到一阶条件,我说在最佳对策下,在S1上写个帽

耶鲁公开课 - 博弈论课程节选