减少

Their salaries are cut by 10%.

The amount of arable land is dwindling.

Nonproductive expenditures keep tapering down.

Crime is down.

Export volume shrinks.

curtail expenditure; cut/reduce budgetary expenditure; cut (back on) spending; cut down/reduce/prune expenses

hold down student intake

cut/reduce pollution

bring down unemployment

downsize the workforce

cut down expenses

reduce employment/job opportunities; cut jobs

cut/slash import tariffs

cut down on work hours

cut/slash/trim the deficit

reduce social inequalities