n.尺子，统治者，直尺，支配者

原形：ruler复数：rulers

Eric is the ruler of the country.
埃里克是这个国家的统治者。
This is her ruler.
这是她的尺子。
Tom draws a line with his pencil and ruler.
汤姆用铅笔和尺子画了一条线。
She used a ruler to draw a straight line on the paper.
她用尺子在纸上画了一条直线。
The ruler of the kingdom was known for his fairness and wisdom.
这个王国的统治者以其公正和智慧而闻名。
In school, we learned to measure distances using a metric ruler.
在学校，我们学会了使用公制尺测量距离。
He marked the midpoint of the board with a ruler.
他用尺子在木板的中点做了标记。
The ruler is an essential tool in any craftsman's toolbox.
尺子是任何工匠工具箱里的必备工具。
The teacher asked us to bring a 15cm ruler for the geometry lesson.
老师让我们带上一把15厘米的尺子上几何课。
The length of the room can be measured accurately with a steel ruler.
房间的长度可以用钢尺准确测量。
The ruler's decision was final and could not be appealed.
统治者的决定是最终的，无法上诉。
In ancient times, the ruler's word was law.
在古代，统治者的话就是法律。
She used a ruler to ensure the curtains were hung evenly.
她用尺子确保窗帘挂得平直。