在减少中

on the increase───正在增加，正在增长

on the case───正在做需要做的事情

on the defensive───处于防御状态

in the secret───知道内情

on the average───平均而言；一般说来

on the cheap───便宜地；经济地

on the cross───不光明正大地；对角

on the needle───注射毒品成瘾

on the surface───在表面上，外表上

The birthrate is on the decrease.───人口出生率正在下降.

The demand for tea is on the decrease ( each year ).───茶叶的需求量 ( 逐年 ) 递减.

Is your production on the decrease?───你们的产量在减少 吗 ?

Travel by tour bus on the decrease.───越来越少人搭游览车旅行.

A local newspaper remarked that crime was on the decrease.───一家地方报纸评论说犯罪案件在减少.

Cases of this nature are on the decrease.───这类案件正在减少.

number of poor men is on the decrease as the economy is growing.───随着经济发展，贫困人口数量正在减少。

population of this city is on the decrease.───这个城市的人口正逐渐减少。