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TOEFL IELTS BNC: 2365 COCA: 3088
rationoun [ C ]uk/ˈreɪ.ʃi.əʊ/ us/ˈreɪ.ʃi.oʊ/ plural ratios

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.

TOEFL IELTS BNC: 2365 COCA: 3088
ratio

noun

ADJECTIVE | VERB + RATIO | RATIO + VERB | PREPOSITION ADJECTIVE➤high, low高比率；低比率➤gender, sex性別比例◇Some universities take steps to keep their gender ratio 50-50.有些大學採取多種措施以保持男女性別比例各佔一半。➤staffing人員配備比◇Staffing ratios were generally better in smaller hospitals.小醫院的人員配備比通常要好一些。➤male-female, nurse-patient, student-teacher, etc.男女、護士與病人、師生等的比例▸➤benefit-to-risk, power-to-weight, etc.利益與風險、權力與責任等之比➤price-earnings, price-to-earnings (both business商業) 市盈率◇The stock's price-earnings ratio has dropped to 24.該股票的市盈率已跌至 24。VERB + RATIO➤achieve, have實現／擁有比率◇They have a high ratio of imports to exports.他們進口對出口的比率很高。➤improve, increase改善／提高比率◇The hospital is trying to improve its staff / patient ratio.該醫院正努力提高醫患比例。➤reduce降低比率▸➤calculate, compute, determine, find, work out計算比率；確定比率；得出比率；算出比率RATIO + VERB➤improve比率提高▸➤worsen比率惡化◇the worsening student / teacher ratio in our schools我們各學校日趨不合理的師生比例➤differ, range (from... to...), vary比例不同；比例（從⋯到⋯）變化◇Waist-to-hip ratios vary according to body type.腰與臀的比例隨體型的不同而不同。PREPOSITION➤in a/the ratio以⋯比例◇We mixed the oil and water in a ratio of one to five.我們以 1 比 5 的比例混合油和水。➤ratio between⋯之間的比率◇the ratio between the amount of time spent on the work and the profit produced該工作所花時間與獲益之比➤ratio of sth to sth⋯和⋯的比率◇the ratio of house prices to incomes房價與收入之比
TOEFL IELTS BNC: 2365 COCA: 3088
ratio

noun

ratio ♦︎ proportion ♦︎ scaleThese are all words for the amount or size of sth compared with sth else. 这些词均表示比率、比例。PATTERNS AND COLLOCATIONS 句型和搭配◆the ratio / proportion of A to B◆a ratio / scale of 1:25, etc.◆out of proportion / scale◆a high / low ratio / proportion■ ratio ˈreɪʃiəʊ; NAmE ˈreɪʃioʊ(plural ratios) [countable] the relationship between two groups of people or things that is represented by two numbers showing how much larger one group is than the other 比率；比例◆What is the ratio of men to women in the department?这个部门的男女比例是多少？◆The school has a low student-teacher ratio (= there are few students for each teacher).这所学校的学生与老师的比例很低。◆The ratio of applications to available places currently stands at 100:1.目前，申请人数和职位空缺的比例为100:1。■ proportion prəˈpɔːʃn; NAmE prəˈpɔːrʃn [uncountable, plural] the relationship of one thing to another, for example in size or amount; the correct relationship between these things （尺寸或数量等的）比例；恰当的比例；均衡；匀称◆The room is very long in proportion to (= relative to) its width.这个房间的长度比宽度大很多。◆You haven't drawn the figures in the foreground in proportion.你的前景人物画得不合比例。◆The head is out of proportion with the body.头部和身体不成比例。◆Always try to keep a sense of proportion (= of the relative importance of different things).事有轻重缓急之分，这要常记在心。◆It is an impressive building with fine proportions.这是一栋比例谐调的雄伟建筑。  see also proportional , proportionate ⇨ relative ■ scale [countable, uncountable] the relation between the actual size of sth and its size on a map, diagram or model that represents it （地图、图表或模型的）比例，比例尺◆The map is drawn to a scale of 1:25 000.这张地图是按1:25 000的比例绘制的。◆Engineers have built a scale model of part of the coast.设计师建构了一个按比例缩小的局部海岸模型。◆Is this diagram to scale (= are all the parts the same size and shape in relation to each other as they are in the thing represented)?这个图表是按比例画的吗？
TOEFL IELTS BNC: 2365 COCA: 3088
ratio
General words for numbers, amounts and quantities: accumulation, allocation, allowance...

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