ra‧ti‧o W3 AC / reɪʃiəʊ $ reɪʃoʊ / 名词 ( 复数形式 ratios ) [可数名词]

a relationship between two amounts, represented by a pair of numbers showing how much bigger one amount is than the other → proportion

the ratio of something to something

The ratio of nursing staff to doctors is 2:1.

ratio between

the ratio between profits and incomes