反比fǎnbǐ 1.两个事物或一事物的两个方面,一方发生变化,其另一方随之起相反的变化,如老年人随着年龄的增长,体力反而逐渐衰弱,就是反比。{inverse ratio. Of two things or two aspects of the same thing, as one changes, the other changes inversely. For example, as a person's age increases, their physical strength declines.} 2.把一个比的前项作为后项,后项作为前项,所构成的比和原来的比互为反比。如9: 3和3: 9互为反比。{When exchang-ing the positions of the antecedent and consequent of a ratio, the resulting ratio is the reverse of the original one, e.g. 9: 3 and 3: 9.}