rulers
The ruler of a country is the person who rules the country.
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。
A ruler is a long, flat piece of wood, metal, or plastic with straight edges marked in inches or centimetres. Rulers are used to measure things and to draw straight lines.
a twelve-inch ruler.
一把12英寸长的尺子。