rulers

柯林斯词典

ruler /ˈruːlə/ (rulers)

1. N-COUNT The ruler of a country is the person who rules the country. 统治者
The former military ruler of Lesotho has been placed under house arrest. 莱索托前军事统治者已被软禁了。
2. N-COUNT A ruler is a long, flat piece of wood, metal, or plastic with straight edges marked in or inches or centimetres. Rulers are used to measure things and to draw straight lines. 尺
...a twelve-inch ruler. …一把12英寸长的尺子。