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TOEFL IELTS BNC: 2365 COCA: 3088

C1 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.出席会议者的男女比例为10:1。
The school is trying to improve its pupil-teacher ratio (= the number of teachers compared with the number of students).该校正大力优化其师生间的人数比例结构。

More examples

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.


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