If one amount is proportional to another, the two amounts increase and decrease at the same rate so there is always the same relationship between them. (与…) 成比例的
adjective [原级] 成比例的；相称的，协调的；（数）成常比的
Loss of weight is directly proportional to the rate at which the disease is progressing. 体重减轻和该病的发展速度成比例。
noun [专属名词] （数）比例项
Salary is proportional to years of experience. 薪金视资历而定。
后缀: tional
【adjective】 表示具有某种特性或性质的 - indicating having the quality or characteristic of
原词: proportional
是通过后缀 【tional】 构成的派生词
