decrease

减少、下降、降低

The number of visitors decreased sharply after the storm.

暴风雨过后，游客人数大幅减少。

减少、调降、缩减

The clinic decreased his dosage to two pills a day.

诊所把他的剂量调降到一天两颗。

减少、下降、降低

There has been a steady decrease in traffic accidents this year.

今年交通事故持续下降。

减少量、降幅

The report showed a decrease of twelve percent in sales.

报告显示销售额的降幅为百分之十二。