Verbs-减少

decrease:指逐渐地、不断地减少.  reduce:普通用词,含义广.指数量、程度的降低或减少.
decrease
1.There has been a steady decrease in population in this city.
                                                               这个城市的人口在持续下降.

2.His interest in this subject gradually decreases.
                                                            他对这门学科的兴趣逐渐减退.

3.They are making further efforts to decrease military spending.
                                                他们正在做进一步的努力来减少军费开支.

4.The new treatment led to a huge decrease in the number of deaths.
                                                         新的疗法使死亡率急剧减少.

5.The government projected a tax decrease.
                                                        政府计划降低税收.
reduce
1.He is reduced almost to a skeleton. 他瘦得几乎变成了一个骨头架子.

2.He is trying to reduce the family's expenses.他正尽力减少家庭开支.

3.They were reduced to begging or starving.他们穷得不行乞便挨饿.

4.Taking extra vitamins may reduce your liability to colds.
                                              多吃一些维生素会减少你得感冒的可能性.

5.The government will be looking to reduce inflation by a further two per cent this year.
                                            政府力求今年把通货膨胀率再减低百分之二.