1630s, "reason, rationale," from Latin ratio "reckoning, numbering, calculation; business affair, procedure," also "reason, reasoning, judgment, understanding," from rat-, past participle stem of reri "to reckon, calculate," also "think" (see reason (n.)). Mathematical sense "relationship between two numbers" is attested from 1650s.
权威例句
1. In 1978 there were 884 students at a lecturer/student ratio of 1:15.
1978年有884名学生,师生比为1比15。
2. The adult to child ratio is 1 to 6.
成人与儿童的比例为1比6。
3. What is the ratio of men to women in the department?
这个部门的男女比例是多少?
4. The ratio of pupils to teachers was 30 to 1.
学生和老师的比率是30比1.
5. The ratio between the two sides is one to four.
双方人数对比是一对四.
词语辨析
【proportion, rate, ratio, percentage】
proportion: (两件事物之间的)比,比例, 通常用于各种成分或分配额的比例等;
rate: 常用于表示速率,利率,出生率,死亡率,兑换率等;
ratio: (表示两个数量之间关系的)比,比例, in direct/inverse ratio to 成正比/反比
percentage: 百分比,百分率;