He cracked me on the head with a ruler.

他用尺子猛击我的头部。

《牛津词典》

He measured his feet with a ruler and then wrote down his size on a piece of paper.

他用尺子量了自己的脚，然后把尺寸写在一张纸上。

youdao

He thwacked the desk with a ruler.

他用尺子重敲桌子。

youdao

They replaced him with a ruler who was more friendly to Germany.

VOA: special.2010.07.08

But there's a theoretical framework, and it will catch up with the French monarchs, among others, later-- that the ruler must be a father, a benevolent figure.

不过,有一种理论框架,使法国的君主终自食恶果,这种理论认为统治者必是父亲一样善良的人

耶鲁公开课 - 欧洲文明课程节选

The true ruler," he says "is one who is like a shepherd with a flock, but he rules not for the benefit of the flock but, of course, for his own interests, " the good of the shepherd."

他说：，“真正的统治者,是牧者，但规则不是要造福牲畜,而是他自身的利益，对牧者要有好处“

耶鲁公开课 - 政治哲学导论课程节选

As a child, if Sonny spoke Crow in school, his teachers would strike his hand with a ruler.

WHITEHOUSE: Remarks by The President at the Tribal Nations Conference

When she queried this, he said his hand was hurting him then told her his mother had hit him with a ruler.

BBC: Yaseen Ali Ege

Bowling Green is the only subway station that has one: Near the turnstiles at every subway entrance is a blue sign with a yellow ruler.

WSJ: Little Ones, the Subway and the Law