n.尺子；划线板
n.统治者；支配者
The ruler is divided into centimetres. 在尺子上分厘米刻度。
He reminded me not to forget to bring my ruler. 他提醒我别忘了带尺子。
The colonists revolted against their British ruler. 殖民地人民反抗他们的英国统治者。
ruler的基本意思是“尺,直尺”,引申可表示“统治者,支配者”。
尺子
