ruler

US /ˈruː.lɚ/
UK /ˈruː.lɚ/
"ruler" picture
1.

统治者, 君主

a person exercising government or dominion

:
The benevolent ruler was loved by all his subjects.
这位仁慈的统治者受到所有臣民的爱戴。
The country was under the absolute power of a single ruler.
这个国家处于一个统治者的绝对权力之下。
2.

尺子

a straight strip of wood, plastic, or metal, marked in inches or centimeters and used for measuring or drawing straight lines

:
Please use a ruler to draw a straight line.
请用尺子画一条直线。
I need a ruler to measure the length of this table.
我需要一把尺子来测量这张桌子的长度。