单词reduce，意思是：v.减少缩小(尺寸、数量、价格等)(使)蒸发减轻体重节食使还原。
例句：1.The number of employees was reduced from 40 to 25.
雇员人数从40人减少到了25人。
2、Costs have been reduced by 20% over the past year.
过去一年，各项费用已经减少了20%。
3、We can reduce the problem to two main issues.
我们可以将这个问题概括成两个要点。
