proportion /prəˈpɔ:ʃən/ n. 1.［u］&［c］比例: direct(inverse) proportion 正（反）比例；the proportion of three to one 三与一之比 in proportion to 与…成比例：This door is narrow in proportion to its height. 门窄了，与它的高度不成比例。 be out of proportion to 和…不相称，与…不成比例：His expenditure is out of proportion to his income 他的支出同他的收入不相称。 2.［c］部分，份儿：a large proportion of the earth’s surface 地球表面的大部分 You have not done your proportion of the work. 你没有做你应做的那份工作。 3. 均衡，相称(常用 pl.)：a room of good proportions 各方面很相称的房间 in proper proportions 以合适的比例：［考句］When carbon is added to iron in proper proportions the result is steel. 把碳按照恰当的比例加到铁里后能生成钢。
proportional /prəˈpɔ:ʃənl/ adj. (to) 比例的，成比例的：be directly/inversely proportional to 与…成正(反)比例；payment proportional to the work done 与完成的工作成比例的报酬The increase in the price is proportional to the improvement in the car. 汽车涨价同它的改进是成比例的。
