- 释义：
- n. 统治者；尺，直尺
- 构词：
- rul统治,规定+er表名词→n.统治者；尺，直尺
- 例句：
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This is a ruler graduated in both inches and centimetres.
这是一把刻有英寸和厘米的尺子.
换一句
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Align the ruler and the middle of the paper.
使尺子与纸张的中部成一条直线.
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In Greek mythology, Zeus was the ruler of Gods and men.
在希腊神话中, 宙斯是众神和人类的统治者.
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