记忆方法
双解例句
小知识
A ratio is the relationship in quantity or degree between two things: “The ratio of men to women on the construction site was ten to one.” This means there were ten men present and one woman.
Use the word ratio when you want to make a comparison between two things. A ratio basically expresses a proportion. Often used in mathematics, the word ratio has many real world uses as well. This word is useful for everything from making salad dressing (an oil-to-vinegar ratio of three to one) to selecting a school for a child (consider the student-to-teacher ratio when making your decision).
实用短语
常用短语
单词用法
noise ratio噪声比
compression ratio n.压缩比
molar ratio n.摩尔比率，摩尔浓度；克分子比，克分子比率
词根词缀
词根: rat
=calculate,表示”计算,考虑”
adj.
rational 理性的,合理的ration[n.理性,定量]+al……的→理性的,合理的
n.
rate 比率；等级；价格，费用rat计算,考虑+e→估价；评价→比率；等级
ratio 比，比率，比例rat计算,考虑+io→n.比，比率，比例
ration 理性,定量rat计算,考虑+ion→计算出来的量→定量,引申为理性
rational [数]有理数ration[n.理性,定量]+al……的→理性的,合理的
v.
rate 估价；评价rat计算,考虑+e→估价；评价→比率；等级
ratify 批准,认可,追认rat计算,考虑+ify表动词→通过计算证实
同义词
comparison / quota / proportion / percentage