柯林斯詞典ratio /?re??????/ (ratios) 1. N-COUNT A ratio is a relationship between two things when it is expressed in numbers or amounts. For example, if there are ten boys and thirty girls in a room, the ratio of boys to girls is 1:3, or one to three. 比率 The adult to child ratio is one to six. 成人與兒童之比是1比6。 返回 ratio劍橋詞典the relationship between two groups or amounts that expresses how much bigger one is than the other 比；比例；比率 The ratio of men to women at the conference was ten to one/10:1. 出蓆會議者的男女比例爲(wèi)10：1。 The school is trying to improve its pupil-teacher ratio (= the number of teachers compared with the number of students ). 該校正大力優(yōu)化其師生間的人數(shù)比例結(jié)搆。 例句 Compute the ratio of the object's height to its weight .What is the car's power to weight ratio?The staff to student ratio has increased dramatically in the last five years .The efficiency of a machine is the ratio between the energy it supplies and the energy put into it.Pi is the ratio of a circle's circumference to its diameter . 返回 ratio