OG-106RUHEf翻译问题

106.

Property taxes are typically set at a flat rate per $ 1,000 of officially assessed value. Reassessments should be frequent in order to remove distortions that arise when property values change at differential rates. In practice, however, reassessments typically occur when they benefit the government – that is, when their effect is to increase total tax revenue.

If the statements above are true, which of the following describes a situation in which a reassessment should occur but is unlikely to do so?

(A) Property values have risen sharply and uniformly.

(B) Property values have all risen – some very sharply, some less so.

(C) Property values have for the most part risen sharply yet some have dropped slightly.

(D) Property values have for the most part dropped significantly; yet some have risen slightly.

(E) Property values have dropped significantly and uniformly

小弟不清楚Reassessments should be frequent in order to remove distortions that arise when property values change at differential rates.这句话如何翻译……请nn帮忙……

没有人帮忙啊 呵呵

Reassessments should be frequent in order to remove distortions that arise when property values change at differential rates

单独翻这个句子：当财产的价值出现不同的波动时，往往就需要重新评估，以削减因这种波动而造成的失实

但是这道题联系上下文的意思应该是说：只有当财产价值同时出现上升、下降时，就需要重新评估了，否则税收收入的基础就不对了

我不是NN，所以瞎翻，反正我是这么理解的。别笑话啊！