约分的英文：
reduce a fraction to its lowest terms
reduction of fraction

参考例句：
  • To remove(a common factor)from the numerator and denominator of a fractional expression.
    约分从一个分数表达式的分子和分母去掉(一个公因子)
  • Exactly divisible by the same unit an integral number of times.Used of two quantities.
    可通分约分的可被相同整数倍单位分割的。用于两个量
reduce是什么意思：
v. 缩减，减小；简化；将…还原；节食；降职
  • be reduced to (a) pulp
    变成浆状,成纸浆 [软块]
  • They held a sale to reduce their inventory.
    他们降价出售库存货物。
  • To reduce in rank;demote.
    使降职，使…降级
fraction是什么意思：
n. 小部分，少量，一点儿；分数，小数
  • Could you move a fraction closer?
    你能不能稍微再挪近点儿？
  • In this case the fractional part is discarded.
    在此情况下小数部分被丢掉了。
  • You do fractions, then you do decimals.
    你先学习分数，然后，学习小数。
its是什么意思：
pron. 它的
  • The noes have it.
    投反对票者占多数.
  • There is no percentage in it.
    没有赚头。
  • The ayes have it.
    赞成者占多数。

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